devel/pmd: update 6.53.0 → 7.3.0 and take maintainership

Migration from 6.x to 7.x:
https://docs.pmd-code.org/pmd-doc-7.0.0/pmd_userdocs_migrating_to_pmd7.html

Chagelogs:
https://github.com/pmd/pmd/releases/tag/pmd_releases/6.54.0
https://github.com/pmd/pmd/releases/tag/pmd_releases/6.55.0
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.0.0-rc1
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.0.0-rc2
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.0.0-rc3
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.0.0-rc4
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.0.0
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.1.0
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.2.0
https://github.com/pmd/pmd/releases/tag/pmd_releases/7.3.0

PR: 280379