composer(deps-dev): Bump ergebnis/phpunit-slow-test-detector from 2.17.0 to 2.18.0 #2007

Job	Run time
Backward-Compatibility Analysis (8.1, locked)	14s
Code Coverage (8.1, locked)	22s
Coding Standards (8.1, locked)	14s
Dependency Analysis (8.1, locked)	17s
Refactoring (8.1, locked)	15s
Security Analysis (8.1, locked)	16s
Static Code Analysis (8.1, locked)	15s
Tests (8.1, lowest)	22s
Tests (8.1, locked)	17s
Tests (8.1, highest)	18s
Tests (8.2, lowest)	15s
Tests (8.2, locked)	15s
Tests (8.2, highest)	15s
Tests (8.3, lowest)	22s
Tests (8.3, locked)	18s
Tests (8.3, highest)	15s
Tests (8.4, lowest)	14s
Tests (8.4, locked)	12s
Tests (8.4, highest)	15s
	5m 11s

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