composer(deps-dev): Bump ergebnis/php-cs-fixer-config from 6.19.0 to 6.20.0 #67

Job	Run time
Coding Standards (8.1, locked)	17s
Dependency Analysis (8.1, locked)	20s
Backward-Compatibility Analysis (8.1, locked)	25s
Refactoring (8.1, locked)	27s
Mutation Tests (8.1, locked)	15s
Code Coverage (8.1, locked)	15s
Security Analysis (8.1, locked)	1m 57s
Tests (8.1, lowest)	23s
Static Code Analysis (8.1, locked)	1m 7s
Tests (8.1, locked)	19s
Tests (8.1, highest)	16s
Tests (8.2, lowest)	1m 13s
Tests (8.2, locked)	24s
Tests (8.2, highest)	24s
Tests (8.3, lowest)	22s
Tests (8.3, locked)	21s
Tests (8.3, highest)	24s
	9m 9s

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