Enhancement: Synchronize with ergebnis/php-library-template

[localheinz]

This PR

• synchronizes with ergebnis/php-library-template

[codecov]

Codecov Report

Merging #184 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #184   +/-   ##
=========================================
  Coverage     84.18%   84.18%           
  Complexity      135      135           
=========================================
  Files            22       22           
  Lines           449      449           
=========================================
  Hits            378      378           
  Misses           71       71

Impacted Files	Coverage Δ	Complexity Δ
...rc/Methods/NoParameterWithNullDefaultValueRule.php	88.57% <ø> (ø)	7 <0> (ø)	⬇️
...res/NoParameterWithNullableTypeDeclarationRule.php	80% <ø> (ø)	5 <0> (ø)	⬇️
...c/Closures/NoParameterWithNullDefaultValueRule.php	81.81% <ø> (ø)	6 <0> (ø)	⬇️
src/Expressions/NoCompactRule.php	61.53% <ø> (ø)	5 <0> (ø)	⬇️
src/Expressions/NoErrorSuppressionRule.php	100% <ø> (ø)	2 <0> (ø)	⬇️
...rc/Methods/NoNullableReturnTypeDeclarationRule.php	80% <ø> (ø)	5 <0> (ø)	⬇️
.../Functions/NoParameterWithNullDefaultValueRule.php	83.33% <ø> (ø)	6 <0> (ø)	⬇️
src/Expressions/NoEmptyRule.php	100% <ø> (ø)	2 <0> (ø)	⬇️
...ods/NoParameterWithNullableTypeDeclarationRule.php	87.87% <ø> (ø)	6 <0> (ø)	⬇️
src/Expressions/NoEvalRule.php	100% <ø> (ø)	2 <0> (ø)	⬇️
... and 12 more

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