Update the PHP CS Fixer configuration

[mspirkov]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.63%. Comparing base (178124f) to head (12ea46d).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1145      +/-   ##
============================================
- Coverage     98.79%   98.63%   -0.17%     
  Complexity     1654     1654              
============================================
  Files           120      120              
  Lines          4301     4308       +7     
============================================
  Hits           4249     4249              
- Misses           52       59       +7     

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