Today while doing zypper dup, a message popped up, Root partion almost full.

After reboot I got that message again, stating 99 Mib left.

I googled and searched on this forum, but all topic are years old, and I could not find anything about cleaning up the root partition.

Code:
Disk /dev/sda: 931,51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WD10EZEX-08W 
Units: sectors of 1 * 512 = 512 bytes 
Sector size (logical/physical): 512 bytes / 4096 bytes 
I/O size (minimum/optimal): 4096 bytes / 4096 bytes 
Disklabel type: gpt 
Disk identifier: 9B2B0727-8EF2-458A-8CD7-5E13FF3E9BCB 

Device  Start       End   Sectors  SizeType
/dev/sda1     2048    1085439    1083392   529M Windows recovery environment 
/dev/sda2  1085440    1288191     202752    99M EFI System 
/dev/sda3  1288192    1320959      32768    16M Microsoft reserved 
/dev/sda4  1320960 1953523711 1952202752 930,9G Microsoft basic data 


Disk /dev/sdb: 931,51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: ST1000DM010-2EP1 
Units: sectors of 1 * 512 = 512 bytes 
Sector size (logical/physical): 512 bytes / 4096 bytes 
I/O size (minimum/optimal): 4096 bytes / 4096 bytes 
Disklabel type: gpt 
Disk identifier: 9BBDB9A9-4412-4799-BC16-933C59E8ACF6 

Device     Start       End   Sectors  SizeType
/dev/sdb1        2048    1026047    1024000   500M EFI System 
/dev/sdb2     1026048   52699135   51673088  24,6G Linux filesystem 
/dev/sdb3    54407168 1949329407 1894922240 903,6G Linux filesystem 
/dev/sdb4  1949329408 1953525134    4195727     2G Linux swap

(sda = win10, sdb = Tumbleweed)