test: fix 'SLF4J(W): No SLF4J providers were found.' warning #2642

Job	Run time
Java_21 (chromium)	6m 22s
dev (ubuntu-latest, chromium)	7m 14s
Java_21 (firefox)	11m 8s
stable (ubuntu-latest, chrome)	5m 41s
dev (ubuntu-latest, firefox)	9m 54s
Java_21 (webkit)	7m 49s
stable (windows-latest, chrome)	8m 49s
dev (ubuntu-latest, webkit)	7m 13s
stable (macos-latest, chrome)	10m 23s
dev (windows-latest, chromium)	7m 37s
stable (windows-latest, msedge)	21m 28s
stable (macos-latest, msedge)	22m 55s
dev (windows-latest, firefox)	14m 21s
dev (windows-latest, webkit)	10m 39s
dev (macos-latest, chromium)	6m 45s
dev (macos-latest, firefox)	10m 16s
dev (macos-latest, webkit)	30m 16s
	3h 18m 50s

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