Enhancement: Synchronize with ergebnis/php-library-template

[localheinz]

This PR

• synchronizes with ergebnis/php-library-template

[codecov]

Codecov Report

Merging #300 into main will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##                main      #300   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        41        41           
===========================================
  Files              4         4           
  Lines            159       144   -15     
===========================================
- Hits             159       144   -15     

Impacted Files	Coverage Δ	Complexity Δ
src/Helper.php	100.00% <0.00%> (ø)	37.00% <0.00%> (ø%)
src/Exception/NonExistentDirectory.php	100.00% <0.00%> (ø)	1.00% <0.00%> (ø%)
src/Exception/InvalidExcludeClassName.php	100.00% <0.00%> (ø)	2.00% <0.00%> (ø%)
src/Exception/NonExistentExcludeClass.php	100.00% <0.00%> (ø)	1.00% <0.00%> (ø%)

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