graphics/mapnik: update to 4.2.2
Remove patch upstreamed in e4e80db44f769a00684002e83f863c4ee9a9f35b
Changelog: https://github.com/mapnik/mapnik/blob/v4.2.2/CHANGELOG.md
Compare changes: https://github.com/mapnik/mapnik/compare/v4.1.3...v4.2.2
PR: 294169
Event: Wiesbaden Hackathon 202604