databases/rubygem-pg_query: update to 4.2.1

Required for gitlab-ce 16.1
Changelog:
https://github.com/pganalyze/pg_query/blob/main/CHANGELOG.md

Upstream was a fix committed which breaks the compilation:
https://github.com/pganalyze/pg_query/commit/684aa77a21eb46188de0ab9bfdabcef71f591614
this is undone with a patch included here.
I reported this upstream:
https://github.com/pganalyze/pg_query/issues/291
Till this is fixed, we can keep the patch that undo 684aa77a21