Add support for Python 3.14

[drhagen]

• Add support for Return 0.26
• Upgrade to Ruff 0.14

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@            Coverage Diff             @@
##             master      #128   +/-   ##
==========================================
  Coverage          ?   100.00%           
==========================================
  Files             ?        25           
  Lines             ?       814           
  Branches          ?        87           
==========================================
  Hits              ?       814           
  Misses            ?         0           
  Partials          ?         0           

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