gitlab CI: bump to latest fedoras
The F37 update was delayed by https://github.com/systemd/systemd/pull/25941 which is now available in F37 as of v251.11
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
The F37 update was delayed by https://github.com/systemd/systemd/pull/25941 which is now available in F37 as of v251.11