chore: use php-cs-fixer 3.63

[phil-davis]

https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/releases/tag/v3.63.2 has been released.
That fixed PHP-CS-Fixer/PHP-CS-Fixer#8182
So now we are fine to use the php-cs-fixer 3.63 series.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.78%. Comparing base (d734e21) to head (8888958).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #668   +/-   ##
=========================================
  Coverage     98.78%   98.78%           
  Complexity     1874     1874           
=========================================
  Files            71       71           
  Lines          5270     5270           
=========================================
  Hits           5206     5206           
  Misses           64       64           

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