Add support for Python 3.14

[hugovk]

Type of Changes

	Type
✓	✨ New feature

Description

Add Python 3.14 to Trove classifiers and tox.ini.

Follow on from #10467.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.93%. Comparing base (f0b41c0) to head (3cb8afa).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10577   +/-   ##
=======================================
  Coverage   95.93%   95.93%           
=======================================
  Files         176      176           
  Lines       19471    19471           
=======================================
  Hits        18679    18679           
  Misses        792      792           

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[jacobtylerwalls]

Thanks, at the time there was a pre-commit hook preventing me from adding that classifier, but glad to see checks pass now.