Raise Python version to 3.10

[IAlibay]

Whether or not we follow SPEC0 or NEP29, Python 3.9 is getting dropped in early April. Since there's nearly no chance we would release until then, we might as well go ahead and bump Python up.

Changes made in this Pull Request:

• Minimum supported Python version is not 3.10

PR Checklist

• Tests?
• Docs?
• CHANGELOG updated?
• Issue raised/referenced?

Developers certificate of origin

• I certify that this contribution is covered by the LGPLv2.1+ license as defined in our LICENSE and adheres to the Developer Certificate of Origin.

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📚 Documentation preview 📚: https://mdanalysis--4503.org.readthedocs.build/en/4503/

[github-actions]

Linter Bot Results:

Hi @IAlibay! Thanks for making this PR. We linted your code and found the following:

There are currently no issues detected! 🎉

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.63%. Comparing base (d366921) to head (fe15f6c).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4503      +/-   ##
===========================================
- Coverage    93.69%   93.63%   -0.06%     
===========================================
  Files          168      180      +12     
  Lines        21211    22294    +1083     
  Branches      3911     3908       -3     
===========================================
+ Hits         19873    20875    +1002     
- Misses         886      961      +75     
- Partials       452      458       +6     

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[RMeli]

I think a bump in the darkerbot action is missing? Otherwise LGTM.

[IAlibay]

Thanks for the review @RMeli - just not fully sure what you meant 😅

[IAlibay]

@RMeli sorry I don't fully understand if you mean this or the actual darker action version number

[RMeli]

I meant this: https://github.com/MDAnalysis/mdanalysis/blob/develop/.github/workflows/darkerbot.yaml#L28

[IAlibay]

Ah thanks! Totally forgot that was even a thing 😅

[IAlibay]

done!

[RMeli]

Thanks @IAlibay. I think the mypy issue comes from upstream? I feel we can just discard it for now...

[IAlibay]

Thanks @IAlibay. I think the mypy issue comes from upstream? I feel we can just discard it for now...

Yeah it's been popping up all over the place (i.e. unrelated to MDA).