[master] Fix lintian warnings.
Changelog:
* d/changelog: remove trailing empty line.
* d/copyright-generator/strip-common-licenses.sh: add GPLv3 to the
list of common licenses.
* d/JB-*.overrides.in, d/s/lintian-overrides: update lintian overrides.
* d/control: add Java 24 Provides.
Testing:
- lintian: clean