[stable7.0] chore(ci): revive php-cs-fixer

[backportbot]

Backport of PR #4422

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 11.14%. Comparing base (f0aa8fc) to head (ddadab7).
Report is 2 commits behind head on stable7.0.

Additional details and impacted files

@@             Coverage Diff              @@
##             stable7.0    #4423   +/-   ##
============================================
  Coverage        11.14%   11.14%           
  Complexity         265      265           
============================================
  Files              122      122           
  Lines             5537     5537           
  Branches          1187     1187           
============================================
  Hits               617      617           
  Misses            4799     4799           
  Partials           121      121           

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