Drop typed-argument-parser 3.9 tests, add 3.14

[JelleZijlstra]

Fixes #689.

3.9 is about to lose support and typed-argument-parser evidently already dropped support.

I took the opportunity to add 3.14 to all the third-party tests now that 3.14.0 is out, but had to disable a few that don't pass yet. I also added a missing line of code for litestar.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.38%. Comparing base (420f8f2) to head (db19b28).
⚠️ Report is 2 commits behind head on main.

@@            Coverage Diff             @@
##             main     #690      +/-   ##
==========================================
+ Coverage   97.37%   97.38%   +0.01%     
==========================================
  Files           3        3              
  Lines        7687     7687              
==========================================
+ Hits         7485     7486       +1     
+ Misses        202      201       -1     

Flag	Coverage Δ
3.10	88.98% <ø> (ø)
3.10.4	88.98% <ø> (ø)
3.11	88.21% <ø> (ø)
3.11.0	87.44% <ø> (ø)
3.12	88.16% <ø> (ø)
3.12.0	88.14% <ø> (ø)
3.13	81.65% <ø> (-0.73%)	⬇️
3.13.0	82.38% <ø> (ø)
3.14	78.82% <ø> (ø)
3.9	89.69% <ø> (ø)
3.9.12	89.69% <ø> (ø)
pypy3.10	88.81% <ø> (ø)
pypy3.11	88.07% <ø> (ø)
pypy3.9	89.52% <ø> (ø)

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see 1 file with indirect coverage changes

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[JelleZijlstra]

The mypy failure is

  Traceback (most recent call last): (diff)
    File "driver.py", line 8, in <module> (diff)
      from test.support import EqualToForwardRef (diff)
  ModuleNotFoundError: No module named 'test' (diff)
   (diff)
  The above exception was the direct cause of the following exception: (diff)
   (diff)
  Traceback (most recent call last): (diff)
    File "driver.py", line 19, in <module> (diff)
      raise ImportError(msg) from e (diff)
  ImportError: Missing "test" module. (diff)

https://github.com/python/typing_extensions/actions/runs/18624855749/job/53101499772?pr=690

That's probably something we can fix, but let's get the rest of the run clean first.

[JelleZijlstra]

Now something is complaining about the ruff config, might try to figure it out tomorrow.

[Daraan]

Now something is complaining about the ruff config, might try to figure it out tomorrow.

Got your back. #691 ;)