Update Psalm and infection

[christian-kolb]

Changes

• Updated Psalm to latest version.
• Updated infection to latest version.
• Updated PHP-CS-Fixer to latest version.
• Switched default PHP version to PHP 8.4.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (3fbd7bd) to head (36039c8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##                main       #75   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       119       119           
===========================================
  Files              2         2           
  Lines            242       242           
===========================================
  Hits             242       242           

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