Migrate to Python 3.12?

[consideRatio]

Python 3.13 is perhaps a bit too new, but I figure Python 3.12 should be fine to use by now.

I'd be happy to see Python 3.11+ datetime.fromisoformat being able to handle sub-second strings. I think a few APIs have started emitting data with subseconds recently, so we could avoid some failures showing up over time in various parsers if we had Python 3.11+.

[VIKTORVAV99]

Believe me this is something I really want to do but we need to keep it in sync with the backend that is running the parsers and there are still a few dependencies there that needs updating.

Hopefully we can do this sooner rather than later though and I'll make sure to bring it up internally (again 😅)!

[VIKTORVAV99]

Working on this as well, we'll do poetry v2 first and once we have that sorted we'll go to Python 3.11.

If that goes smoothly and without issues we'll likely go to 3.12 soon after.