How should one update from the commandline?

I presume some packages on your host are out of date. Host 3400g has:

3400g:~ # zypper se -xs Mesa-dri
Loading repository data...
Reading installed packages...

S | Name     | Type    | Version              | Arch   | Repository
--+----------+---------+----------------------+--------+------------------------
i | Mesa-dri | package | 23.1.3-1699.354.pm.1 | x86_64 | Packman
v | Mesa-dri | package | 23.1.2-1699.353.pm.1 | i586   | Packman
v | Mesa-dri | package | 23.1.3-353.1         | x86_64 | openSUSE-Tumbleweed-Oss
3400g:~ # 

Check package on your host by running:

3400g:~ # zypper if Mesa-dri
Loading repository data...
Reading installed packages...


Information for package Mesa-dri:
---------------------------------
Repository     : Packman
Name           : Mesa-dri
Version        : 23.1.3-1699.354.pm.1
Arch           : x86_64
Vendor         : http://packman.links2linux.de
Installed Size : 30.2 MiB
Installed      : Yes (automatically)
Status         : up-to-date
Source package : Mesa-drivers-23.1.3-1699.354.pm.1.src
Upstream URL   : https://www.mesa3d.org
Summary        : DRI plug-ins for 3D acceleration
Description    : 
    This package contains Mesa DRI drivers for 3D acceleration.

3400g:~ #