Add support for python 3.12

[postlund]

What feature would you like?

Add python 3.12 when running tests. Should hopefully just work.

Describe the solution you'd like

As above.

Any other information to share?

No.

[maxileith]

Hey @postlund ,

thank you for this awesome project. Do you have an estimation for the release of official Python 3.12 compatibility?

Thanks in advance