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 98.46%. Comparing base (7c5f7c2) to head (fbfb593).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #459      +/-   ##
============================================
- Coverage     98.73%   98.46%   -0.28%     
  Complexity      259      259              
============================================
  Files            24       24              
  Lines           793      782      -11     
============================================
- Hits            783      770      -13     
- Misses           10       12       +2     

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