composer(deps-dev): bump ergebnis/phpunit-slow-test-detector from 2.17.0 to 2.18.0 #1893

Job	Run time
Dependency Analysis (8.1, locked)	16s
Code Coverage (8.1, locked)	15s
Backward-Compatibility Analysis (8.1, locked)	26s
Coding Standards (8.1, locked)	15s
Mutation Tests (8.1, locked)	33s
Refactoring (8.1, locked)	19s
Security Analysis (8.1, locked)	18s
Static Code Analysis (8.1, locked)	34s
Tests (8.1, lowest)	16s
Tests (8.1, locked)	14s
Tests (8.1, highest)	17s
Tests (8.2, lowest)	15s
Tests (8.2, locked)	21s
Tests (8.2, highest)	32s
Tests (8.3, lowest)	22s
Tests (8.3, locked)	19s
Tests (8.3, highest)	23s
Tests (8.4, lowest)	23s
Tests (8.4, locked)	20s
Tests (8.4, highest)	25s
	7m 3s

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