Enhancement: Synchronize with ergebnis/php-library-template

[localheinz]

This PR

• synchronizes with ergebnis/php-library-template

[codecov]

Codecov Report

Merging #90 into main will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main      #90   +/-   ##
=========================================
  Coverage     92.89%   92.89%           
  Complexity       88       88           
=========================================
  Files            11       11           
  Lines           169      169           
=========================================
  Hits            157      157           
  Misses           12       12           

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