Add Python 3.15 checks to CI

[srittau]

No description provided.

[srittau]

The tests fail on 3.15, because ast.dump(Name(ctx=Load())) doesn't include the ctx=Load() part starting with 3.15. This makes doctest fail in two places. Maybe someone else has a good idea on how to handle this?

[JelleZijlstra]

Doctest probably has options for doing conditional checks? Otherwise maybe just move away from doctests.

[github-actions]

This change has no effect on typeshed. 🤖🎉

[AlexWaygood]

Could also add the classifier to

flake8-pyi/pyproject.toml

Line 44 in 1ae02c5

"Programming Language :: Python :: 3.14",

[srittau]

I assume hatchling doesn't add those classifiers automatically like other backends do?

[AlexWaygood]

Oh, I have no idea. Maybe it isn't necessary anymore!

[srittau]

Me neither, I'll add it.