composer(deps-dev): bump ergebnis/phpunit-slow-test-detector from 2.17.0 to 2.18.0 #435

Job	Run time
Coding Standards (8.1, locked)	15s
Dependency Analysis (8.1, locked)	15s
Backward-Compatibility Analysis (8.1, locked)	15s
Code Coverage (8.1, locked)	1m 15s
Mutation Tests (8.1, locked)	1m 18s
Refactoring (8.1, locked)	13s
Security Analysis (8.1, locked)	13s
Static Code Analysis (8.1, locked)	26s
Tests (8.1, lowest)	19s
Tests (8.1, locked)	14s
Tests (8.1, highest)	19s
Tests (8.2, lowest)	17s
Tests (8.2, locked)	30s
Tests (8.2, highest)	25s
Tests (8.3, lowest)	26s
Tests (8.3, locked)	23s
Tests (8.3, highest)	21s
	7m 24s

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