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

Before submitting

• Was this discussed/agreed via a GitHub issue? (not for typos and docs)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you list all the breaking changes introduced by this pull request?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or minor internal changes/refactors)

PR review

Anyone in the community is welcome to review the PR.
Before you start reviewing, make sure you have read the review guidelines. In short, see the following bullet-list:

Reviewer checklist

• Is this pull request ready for review? (if not, please submit in draft mode)
• Check that all items from Before submitting are resolved
• Make sure the title is self-explanatory and the description concisely explains the PR
• Add labels and milestones (and optionally projects) to the PR so it can be classified

---

📚 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 98.70588% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 87%. Comparing base (7983ecb) to head (7087914).
⚠️ Report is 10 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #21334   +/-   ##
=======================================
- Coverage      87%      87%   -0%     
=======================================
  Files         270      270           
  Lines       23888    23890    +2     
=======================================
- Hits        20668    20667    -1     
- Misses       3220     3223    +3     

[deependujha]

Hi @matsumotosan, just to confirm, if future PRs use Union[Type_X, Type Y], will pre-commit automatically handle and update it to Type_X | Type_Y ?

[matsumotosan]

@deependujha Most of the changes were introduced by pre-commit when I changed the python version, so it should be automatically handled. I think that runtime type annotations may not be handled automatically though since I had to manually change a few of those for this PR.