Update pyproject.toml tool.ruff target to py310

[matsumotosan]

What does this PR do?

Update ruff target version to Python 3.10 as part of #21304

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📚 Documentation preview 📚: https://pytorch-lightning--21334.org.readthedocs.build/en/21334/

[SkafteNicki]

@matsumotosan I think #21344 needs to be merged before tests can pass for this PR

[matsumotosan]

@SkafteNicki I agree. I figured I could take a look at the changes the linter would make since it would be a lot.

[codecov]

Codecov Report

❌ Patch coverage is 98.70436% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 87%. Comparing base (b15d394) to head (0e4ed01).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #21334   +/-   ##
=======================================
- Coverage      87%      87%   -0%     
=======================================
  Files         269      269           
  Lines       23744    23746    +2     
=======================================
- Hits        20572    20571    -1     
- Misses       3172     3175    +3     

[bhimrazy]

LGTM