resolve ftbfs with Java 25

This MR addresses #1108575. It requires lombok!4 merged and uploaded first.

Changes:

• update required lombok version
• add -proc:full to enable annotation processing
• use --release 11 rather than -source 11 to produce Java 11 compatible bytecode.
• maintenance: update standards version.

Testing:

• rebuild in sid chroot with updated lombok
• rebuild in default java 25 chroot with updated lombok.