Enhancement: Update localheinz/php-cs-fixer-config

[localheinz]

This PR

• updates localheinz/php-cs-fixer-config
• runs make cs
• does not remove localheinz/php-cs-fixer-config on PHP 7.3

💁‍♂️ For reference, see localheinz/php-cs-fixer-config@1.17.0...1.19.0.

[codecov]

Codecov Report

Merging #64 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             master    #64   +/-   ##
=======================================
  Coverage       100%   100%           
  Complexity       55     55           
=======================================
  Files            11     11           
  Lines           201    201           
=======================================
  Hits            201    201

Impacted Files	Coverage Δ	Complexity Δ
...rc/Methods/NoParameterWithNullDefaultValueRule.php	100% <ø> (ø)	6 <0> (ø)	⬇️
...res/NoParameterWithNullableTypeDeclarationRule.php	100% <ø> (ø)	4 <0> (ø)	⬇️
...ods/NoParameterWithNullableTypeDeclarationRule.php	100% <ø> (ø)	5 <0> (ø)	⬇️
...rc/Methods/NoNullableReturnTypeDeclarationRule.php	100% <ø> (ø)	4 <0> (ø)	⬇️
.../Functions/NoParameterWithNullDefaultValueRule.php	100% <ø> (ø)	5 <0> (ø)	⬇️
...ods/NoConstructorParameterWithDefaultValueRule.php	100% <ø> (ø)	6 <0> (ø)	⬇️
.../Functions/NoNullableReturnTypeDeclarationRule.php	100% <ø> (ø)	4 <0> (ø)	⬇️
...c/Closures/NoNullableReturnTypeDeclarationRule.php	100% <ø> (ø)	3 <0> (ø)	⬇️
...c/Closures/NoParameterWithNullDefaultValueRule.php	100% <ø> (ø)	5 <0> (ø)	⬇️
...ons/NoParameterWithNullableTypeDeclarationRule.php	100% <ø> (ø)	4 <0> (ø)	⬇️
... and 1 more

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