Add support for Python 3.14

[hugovk]

Python 3.14 is still in alpha, but I think we can start supporting it already?

• https://devguide.python.org/versions/
• https://peps.python.org/pep-0745/

[claudep]

As for me, there is no rush in adding 3.14 in the test suite, all the more that the code doesn't need any adaptations. The resource consumption is not worth it IMO.

[hugovk]

This repo is pretty quiet and the extra CI time won't make much difference, but I'm fine to leave it until the beta if you prefer?

[andrewgy8]

Since you are the release manager for this and the next versions of Python, I see no issues to run it here. Any issues that arise Im sure will be smoothed out quickly 😜

[hugovk]

Yes, and if we find any issues, it will help us get them fixed in CPython, or possibly other dependencies, before the big release in October.

But again, I don't mind waiting a bit longer.

[claudep]

Considering MS is building nuclear powerplants to power its infrastructure, I'd rather not push too much to add more compute power when there is no compelling added value ☢️ 😱