[3.19] community/postgis: upgrade to 3.4.1
Backport of !58318 (merged) as this version fixes a number of issues:
https://git.osgeo.org/gitea/postgis/postgis/src/tag/3.4.1/NEWS
Backport of !58318 (merged) as this version fixes a number of issues:
https://git.osgeo.org/gitea/postgis/postgis/src/tag/3.4.1/NEWS