Bump to Dj 4.x

[matmair]

Close #2853
Follow up to #4584; Switch the code base to Django 4.2 (LTS) as 3.x is EOL in 2 months.

[SchrodingersGat]

Only 1 error now

[matmair]

IMO the flag for the custom manger support is just not present on django-mptt. Adding it adds a bunch of migrations so I did not commit that.
If we get it to run in this state I think we should just merge and not care about it. The affected migrations are pretty old

[SchrodingersGat]

The affected migrations are pretty old

We should look seriously into squashing migrations before a certain date, back a few major releases.

[matmair]

@SchrodingersGat I think we should do stuff like that with the 1.0. Maybe make a 0.99 release before and add a check that everything was updated to that and have some breaking changes in the transition to 1.0 like removing old migrations, moving config files out of the code source, move plugins dir etc.

[matmair]

FYI Debian 11 (Python 3.9, current min) is EOL 2024-08-15 so I think after that we could switch to Python 3.11 (default for Debian 12) or at least Python 3.10 (default for Ubuntu 22.04 which was released April 2022)

[SchrodingersGat]

FYI Debian 11 (Python 3.9, current min) is EOL 2024-08-15 so I think after that we could switch to Python 3.11 (default for Debian 12) or at least Python 3.10 (default for Ubuntu 22.04 which was released April 2022)

@matmair happy with that. At some point we need to consider supporting python 3.12 - but that has only just been supported officially by django

[matmair]

@SchrodingersGat can you check the TZ addition in the notification age? Seems to work for me but want to be sure. Should be ready for review otherwise.
No idea why Deepsource is not working again - maybe we should switch to SonarCloud

[SchrodingersGat]

@matmair LGTM - glad that we finally got this one worked out :)

[matmair]

I was getting nervous about the End of Life approaching; 0.14 is shaping up to be a good release.

[SchrodingersGat]

I've actually put a release data against 0.14.0 (end of Feb) so that we have something to work to :)

[SchrodingersGat]

Note (#6453) that this PR requires some changes to the setup configuration if running behind a proxy