This changed because of a migration from postgresql 12 -> 13. Future
versions should probably be named with the database version appended,
rather than "new", but for now this is how the system is set up.
Gitea simply offers better performance. I wasn't using all of GitLab's
features anyway, and while the missing CI is annoying, I hadn't
previously managed to set this up anyway, and it can be easily
replaced by something a bit more dedicated than GitLab's
implementation.
This should hopefully allow me to host git repositories without
compromising on memory/CPU time available to other services.