[MNT] Update ruff and mypy versions

[satvshr]

fixes #1639.

Only major changes in this PR:

1. ruff version update from v0.14.10 to v0.15.1
2. mypy version update from v1.13.0 to v1.19.1
   • Had to add a few files to be ignored by mypy (instead of using the suggested approach by @fkiraly to only check for files changed and then chip at it brick-by-brick to fix mypy errors, the architecture of those functions would most likely need to be changed, so if someone was adding a simple test they'd have to fix a ton of errors occuring in that file for other functions, which doesnt make sense)
3. Adding a fixed file ending check to prevent unwarranted git diffs
4. Removing trailspaces
5. Including the tests directory in ruff and mypy checks:
   • Fixed ruff wherever possible and added noqa tags to other places
   • Had to add a few files to be ignored by mypy (for the reason mentioned above in point 2)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.71%. Comparing base (7feb2a3) to head (4db0330).

Files with missing lines	Patch %	Lines
openml/cli.py	0.00%	1 Missing ⚠️
openml/flows/functions.py	0.00%	1 Missing ⚠️
openml/tasks/functions.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1637      +/-   ##
==========================================
- Coverage   52.82%   52.71%   -0.11%     
==========================================
  Files          37       37              
  Lines        4371     4361      -10     
==========================================
- Hits         2309     2299      -10     
  Misses       2062     2062              

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[geetu040]

I think we should keep skipping the tests/files directory. The content there is generated programmatically, and excluding it helps ensure we don't accidentally modify generated artifacts.

Not sure, but after this change it might make sense to adjust pre-commit-config.yaml or pyproject.toml make the skip rule less restrictive.

Also please sync with main, there are some conflicts.

Other than that, the rest of the changes look good to me.

[satvshr]

I think we should keep skipping the tests/files directory.

I think Franz was the one who told me to include the tests/files directory. We should discuss this today in the meeting.