chore: bump symfony 7.x minimum to 7.1

[DjordyKoert]

Description

Please include a summary of the changes and the related issue.

Closes #...

What type of PR is this? (check all applicable)

• Bug Fix
• Feature
• Refactor
• Deprecation
• Breaking Change
• Documentation Update
• CI

Checklist

• I have made corresponding changes to the documentation (docs/)
• I have made corresponding changes to the changelog (CHANGELOG.md)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.53%. Comparing base (9411e9c) to head (13ddc15).
Report is 4 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2419      +/-   ##
==========================================
+ Coverage   89.50%   89.53%   +0.03%     
==========================================
  Files          78       78              
  Lines        2896     2915      +19     
==========================================
+ Hits         2592     2610      +18     
- Misses        304      305       +1     

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