Add Django 5.0 And Python 3.12 Compatibility

[ckarli]

Removed Python 3.7 as it's deprecated

[jerch]

@ckarli Does not work yet with django 5. The tests fail at Model.objects.create ending up at:

ValueError: Model instances passed to related filters must be saved.

Had no time yet to look into django 5 changes. On a sidenote - I remember seeing something similar for backrelations starting to require a pk around 4.1 or 4.2, which was not the case before.

[jerch]

Btw you can also remove the django 3.2 tests, I am not keen to cover more than one LTS version in the long run.

[martinlehoux]

Looks like a deprecation django/django@4d78d73

[martinlehoux]

Looks like it was in Django 4.1 https://docs.djangoproject.com/en/5.0/releases/4.1/

Anyway, this is an error in the example project, I suggest to update the exampleapp

[martinlehoux]

I made a PR on your PR ckarli#1

With this all tests succeed, all tests pass, except the psycopg3 matrix

[jerch]

Trying to fix the docs madness in #141 - once thats merged into master, plz apply it here as well.

[martinlehoux]

Yes I saw that, I ignored it but thanks for the fix ;)

[jerch]

Guess thats the downside of rolling software package releases 😅 I simply tagged it with the last working version for now and re-ordered the test execution to see at least, whether the unit tests pass.

[jerch]

Gonna merge the PR, as it works now. The remaining psycopg3 error comes from strict versioning of the CI env, which is already fixed in master. No need to go the long path with another PR-PR.

Thx @ckarli & @martinlehoux for looking into this 👍