Allow Symfony 8

[kochen]

close #1975

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.31%. Comparing base (d669926) to head (3a3786e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1976   +/-   ##
=========================================
  Coverage     53.31%   53.31%           
  Complexity     9805     9805           
=========================================
  Files           495      495           
  Lines         24137    24137           
=========================================
  Hits          12869    12869           
  Misses        11268    11268           

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