Drop support for python 3.9

[tefra]

📒 Description

• Drop support for python 3.9

🔗 What I've Done

Write a description of the steps taken to resolve the issue

💬 Comments

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🛫 Checklist

• Updated docs
• Added unit-tests
• Sample tests pass
• W3C tests pass

[codecov]

Codecov Report

❌ Patch coverage is 88.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.89%. Comparing base (5d62753) to head (d1a3aa0).

Files with missing lines	Patch %	Lines
xsdata/formats/dataclass/filters.py	78.57%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1189      +/-   ##
==========================================
- Coverage   99.94%   99.89%   -0.06%     
==========================================
  Files         116      116              
  Lines        9389     9371      -18     
  Branches     1435     1428       -7     
==========================================
- Hits         9384     9361      -23     
- Misses          5        9       +4     
- Partials        0        1       +1     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud