Require trove-classifiers>=2024.10.12

[radarhere]

main has started failing - https://github.com/python-pillow/Pillow/actions/runs/11573601676/job/32216060741#step:28:4035

   +         'Some of your classifiers are not standard classifiers:\n'
   +         'License :: OSI Approved :: CMU License (MIT-CMU)',

[hugovk]

These things are essentially the test dependencies, trove-classifiers>=2024.10.12 being required for a pyroma test.

Can we list this new trove-classifiers>=2024.10.12 in pyproject.toml's optional-dependencies.tests, remove this step (and duplicated dependencies), and modify the Build Pillow step below to pip install with the tests extra?

-        cmd /c "winbuild\build\build_env.cmd && $env:pythonLocation\python.exe -m pip install -v $FLAGS ."
+        cmd /c "winbuild\build\build_env.cmd && $env:pythonLocation\python.exe -m pip install -v $FLAGS .[tests]"

[radarhere]

Actually, I cleared the cache, and it's working again - https://github.com/python-pillow/Pillow/actions/runs/11574569253