composer(deps-dev): Bump ergebnis/php-cs-fixer-config from 6.25.1 to 6.28.0 #188

Job	Run time
Backward-Compatibility Analysis (8.1, locked)	31s
Dependency Analysis (8.1, locked)	18s
Code Coverage (8.1, locked)	22s
Coding Standards (8.1, locked)	17s
Mutation Tests (8.1, locked)	16s
Refactoring (8.1, locked)	21s
Security Analysis (8.1, locked)	21s
Static Code Analysis (8.1, locked)	30s
Tests (8.1, lowest)	14s
Tests (8.1, locked)	14s
Tests (8.1, highest)	17s
Tests (8.2, lowest)	10s
Tests (8.2, locked)	18s
Tests (8.2, highest)	11s
Tests (8.3, lowest)	11s
Tests (8.3, locked)	16s
Tests (8.3, highest)	11s
	4m 58s

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