Enforce modern annotations syntax

[Avasam]

Summary of changes

Relates to #2345 (comment) , as more type hints and annotations are added. Using a modern annotations syntax is preferable, reduces extraneous typing imports and allows more type subscriptions.

I've merged the ignore and extend-ignore ignore entries in Ruff because extend-ignore is obsolete https://docs.astral.sh/ruff/settings/#lint_extend-ignore

Bumped ruff in pre-commit to latest.
Bumped pytest-ruff to latest (https://github.com/businho/pytest-ruff/releases/tag/v0.3.2 should have a much cleaner error output now)
Edit: I keep forgetting this comes from the skeleton, I opened jaraco/skeleton#126

Pull Request Checklist

• Changes have tests (added new lint checks)
• News fragment added in newsfragments/. (no user-facing changes)
  (See documentation for details)

[DimitriPapadopoulos]

Perhaps bump ruff version to 0.4.4:

setuptools/.pre-commit-config.yaml

Lines 2 to 3 in 4dc0c31

	- repo: https://github.com/astral-sh/ruff-pre-commit
	rev: v0.1.8

[Avasam]

setuptools/.pre-commit-config.yaml

Is pre-commit.ci even enabled in this project? It'd be nice to for autofixes on PRs (including lint fixes which that config is missing).

either way yeah, let's bump Ruff too

[DimitriPapadopoulos]

You-re right, pre-commit does not seem to be used by CI jobs, instead something (tox?) calls pytest-ruff.

Conflicts must be resolved.

[Avasam]

Runtime type aliases can't use | unions for Python 3.8 . In those cases, would you prefer Union[..., None] or Optional[...] ? Personally I feel like the former, avoiding Optional, will be more consistent (in terms of imports, avoids Optional[Union[..., ...]] and closer to eventual syntax upgrade)

[abravalheri]

Union[..., None] should be fine, specially if it simplifies Optional[Union[..., ...]]...

[abravalheri]

Thank you!