Enhancement: Use Php74 rule set

[localheinz]

This pull request

• uses the Php74 rule set
• runs make coding-standards

[codecov]

Codecov Report

Merging #550 (587a1f0) into main (7c1691c) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##                main      #550   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        87        87           
===========================================
  Files             12        12           
  Lines            358       358           
===========================================
  Hits             358       358           

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