Resolve Java 21 FTBFS

This MR resolves 1057517

Changes:

• use java_compat_level variable provided by java-common to set Java release level

Testing:

• rebuild in sid chroot
• rebuild in default Java 21 chroot

added 12 commits

• fca6f628...17fd4c3c - 11 commits from branch java-team:master
• a2e72571 - Merge branch 'master' into 'master'

Compare with previous version

approved this merge request

mentioned in commit e19a4b25

merged