MNT: bumps min python version to 3.10

[Gui-FernandesBR]

Pull request type

• Code changes (bugfix, features)
• Code maintenance (refactoring, formatting, tests)
• ReadMe, Docs and GitHub updates
• Other (please describe):

Checklist

• Tests for the changes have been added (if needed)
• Docs have been reviewed and added / updated
• Lint (black rocketpy/ tests/) has passed locally
• All tests (pytest tests -m slow --runslow) have passed locally
• CHANGELOG.md has been updated (if relevant)

Current behavior

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New behavior

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Breaking change

• Yes
• No

Additional information

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[Gui-FernandesBR]

Python 3.14 will be released at Oct 7th, aka this Tuesday.
After that, I expect CI to be get run correctly.
Let's wait for it.

https://devguide.python.org/versions/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.27%. Comparing base (f17893b) to head (72fdd69).
⚠️ Report is 26 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #857      +/-   ##
===========================================
+ Coverage    80.02%   80.27%   +0.25%     
===========================================
  Files           98      104       +6     
  Lines        12004    12757     +753     
===========================================
+ Hits          9606    10241     +635     
- Misses        2398     2516     +118     

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