Updating my 15.5 ask me 'libc.so.6(GLIBC_2.38)(64bit)'

here is:

> pla@plaST:~> zypper lr -d
> #  | Alias                                        | Name                                                                                        | Enabled | GPG Check | Refresh | Priority | Type   | URI                                                                                 | Service
> ---+----------------------------------------------+---------------------------------------------------------------------------------------------+---------+-----------+---------+----------+--------+-------------------------------------------------------------------------------------+--------
>  1 | KDE-Extra                                    | KDE-Extra                                                                                   | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/KDE:/Extra/openSUSE_Leap_15.5/           | 
>  2 | ftp.gwdg.de-openSUSE_Leap_$releasever        | Packman Repository                                                                          | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Leap_15.5/                 | 
>  3 | google-chrome                                | z-ext google(chrome)                                                                        | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://dl.google.com/linux/chrome/rpm/stable/x86_64                                | 
>  4 | openSUSE-Leap-15.5-1                         | openSUSE-Leap-15.5-1                                                                        | No      | ----      | ----    |   99     | rpm-md | hd:/?device=/dev/disk/by-id/usb-SanDisk_Cruzer_Blade_4C531001610823122340-0:0-part2 | 
>  5 | opensuse-guide.org-openSUSE_Leap_$releasever | Libdvdcss Repository                                                                        | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://opensuse-guide.org/repo/openSUSE_Leap_15.5/                                 | 
>  6 | repo-backports-debug-update                  | Update repository with updates for openSUSE Leap debuginfo packages from openSUSE Backports | No      | ----      | ----    |   99     | N/A    | http://download.opensuse.org/update/leap/15.5/backports_debug/                      | 
>  7 | repo-backports-update                        | Update repository of openSUSE Backports                                                     | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/update/leap/15.5/backports/                            | 
>  8 | repo-debug                                   | Debug Repository                                                                            | No      | ----      | ----    |   99     | N/A    | http://download.opensuse.org/debug/distribution/leap/15.5/repo/oss/                 | 
>  9 | repo-debug-non-oss                           | Debug Repository (Non-OSS)                                                                  | No      | ----      | ----    |   99     | N/A    | http://download.opensuse.org/debug/distribution/leap/15.5/repo/non-oss/             | 
> 10 | repo-debug-update                            | Update Repository (Debug)                                                                   | No      | ----      | ----    |   99     | N/A    | http://download.opensuse.org/debug/update/leap/15.5/oss/                            | 
> 11 | repo-debug-update-non-oss                    | Update Repository (Debug, Non-OSS)                                                          | No      | ----      | ----    |   99     | N/A    | http://download.opensuse.org/debug/update/leap/15.5/non-oss/                        | 
> 12 | repo-non-oss                                 | Non-OSS Repository                                                                          | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/distribution/leap/15.5/repo/non-oss/                   | 
> 13 | repo-openh264                                | Open H.264 Codec (openSUSE Leap)                                                            | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://codecs.opensuse.org/openh264/openSUSE_Leap/                                  | 
> 14 | repo-oss                                     | Main Repository                                                                             | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/distribution/leap/15.5/repo/oss/                       | 
> 15 | repo-sle-debug-update                        | Update repository with debuginfo for updates from SUSE Linux Enterprise 15                  | No      | ----      | ----    |   99     | N/A    | http://download.opensuse.org/debug/update/leap/15.5/sle/                            | 
> 16 | repo-sle-update                              | Update repository with updates from SUSE Linux Enterprise 15                                | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/update/leap/15.5/sle/                                  | 
> 17 | repo-source                                  | Source Repository                                                                           | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/source/distribution/leap/15.5/repo/oss/                | 
> 18 | repo-update                                  | Main Update Repository                                                                      | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/update/leap/15.5/oss                                   | 
> 19 | repo-update-non-oss                          | Update Repository (Non-Oss)                                                                 | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/update/leap/15.5/non-oss/                              | 
> 20 | suse-Emulators:Wine                          | suse-Emulators:(Wine)                                                                       | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/Emulators/15.5/                          | 
> 21 | suse-GNOME:Apps                              | suse-GNOME:/Apps                                                                            | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/GNOME:/Apps/15.5/                        | 
> 22 | suse-M17N:fonts                              | suse-M17N:/fonts                                                                            | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/M17N:/fonts/15.5/                        | 
> 23 | suse-devel:languages:gogocryptfs             | suse-devel:/languages:/go(gocryptfs)                                                        | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/devel:/languages:/go/15.5/               | 
> 24 | suse-home:AndnoVember:LXQtsirikali           | suse-home:/AndnoVember:/LXQt(sirikali)                                                      | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/home:/AndnoVember:/LXQt/15.5/            | 
> 25 | suse-home:adraKIM_KDE_service_menu           | suse-home:adra(KIM KDE service menu)                                                        | No      | ----      | ----    |   99     | rpm-md | https://download.opensuse.org/repositories/home:adra/15.5/                          | 
> 26 | suse-home:ecsosgparted                       | suse-home:/ecsos(gparted)                                                                   | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/home:/ecsos/15.5/                        | 
> 27 | suse-home:maxiotiszoom                       | suse-home:maxiotis(zoom)                                                                    | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/home:maxiotis/15.5/                      | 
> 28 | suse-home:plasmaregataoskolourpaint          | suse-home:plasmaregataos(kolourpaint vitualkbrd)                                            | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/home:plasmaregataos/15.5/                | 
> 29 | suse-mozillafirefox                          | suse-/mozilla(firefox)                                                                      | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/mozilla/openSUSE_Leap_15.5/              | 
> 30 | suse-network:imsignal                        | suse-network:/im(signal)                                                                    | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/network:/im:/signal/15.5/                | 
> 31 | suse-network:utilitiesyt-dlp_youtube-dl      | suse-network:/utilities(yt-dlp youtube-dl)                                                  | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/network:utilities/15.5/                  | 
> 32 | suse-networkrsync                            | suse-network(rsync)                                                                         | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/network/15.5/                            | 
> 33 | suse-server:messagingtelegram                | suse-server:messaging(telegram)                                                             | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | https://download.opensuse.org/repositories/server:/messaging/15.5/                  | 
> 34 | z-LOCAL-repositoryzoom-ipscan                | z-LOCAL-repository(zoom-ipscan)                                                             | No      | ----      | ----    |   99     | N/A    | dir:/dati/impo-conf/repositoryST/                                                   | 
> 35 | z-ext_skype_stable                           | z-ext skype (stable)                                                                        | No      | ----      | ----    |   99     | rpm-md | https://repo.skype.com/rpm/stable/                                                  | 
> pla@plaST:~>