fix: make free space for ci workflows before running them

[sabify]

Related: #3204

Credit: actions/runner-images#10386 (comment)

[sabify]

It can save up to 23% of disk usage:

Run echo "Disk space before cleanup:"
Disk space before cleanup:
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        73G   53G   21G  73% /
tmpfs           7.9G    2K  7.9G   1% /dev/shm
tmpfs           3.2G  1.1M  3.2G   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
/dev/sdb15      105M  6.1M   99M   6% /boot/efi
/dev/sda1        74G  4.1G   66G   6% /mnt
tmpfs           1.6G   12K  1.6G   1% /run/user/1001
Disk space after cleanup:
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        73G   37G   37G  50% /
tmpfs           7.9G  172K  7.9G   1% /dev/shm
tmpfs           3.2G  1.1M  3.2G   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
/dev/sdb15      105M  6.1M   99M   6% /boot/efi
/dev/sda1        74G  4.1G   66G   6% /mnt
tmpfs           1.6G   12K  1.6G   1% /run/user/1001

[benwis]

I hate that this thing exists