42.0.0 was late September 2023, so as of writing, it's over 3 months later now...
https://github.com/wikimedia/mediawiki-tools-codesniffer/compare/v42.0.0...master
https://gerrit.wikimedia.org/r/c/mediawiki/tools/codesniffer/+/985026 would help unblock bumps in MW core eventually...