Add support for Python 3.14

[d-chris]

• Added Python 3.14 to the classifiers in pyproject.toml.
• Updated dependency versions in the dev, test, and docs groups to allow for greater flexibility.
• Modified the tox.ini file to include a new environment for Python 3.14.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (bd10d96) to head (38434f7).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #28       +/-   ##
========================================
- Coverage   99.66%     0   -99.67%     
========================================
  Files           6     0        -6     
  Lines         590     0      -590     
========================================
- Hits          588     0      -588     
+ Misses          2     0        -2     

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