Support Python 3.14

[InSyncWithFoo]

Python 3.14 will be released in October 2025 (i.e., about nine months to go at the time of writing). Considering that support for 3.13 was formally added in May 2024, it's possible that 3.14 too will be added in May this year, when it enter its beta stage.

Rules need updating:

• PTH210
• RUF058

Issues and PRs:

• [flake8-use-pathlib] Recommend Path.iterdir() over os.scandir() (PTH209) #14623
• 3.14 deferred evaluation of annotations #15100

[AlexWaygood]

Thanks. The PEP outlining the release schedule says that the first beta is scheduled for May 6th. I think adding support before then would be premature, as interfaces will be constantly changing until then, but we can add support as soon as we enter the beta period. https://peps.python.org/pep-0745/