Fix junit group config for Dependabot #184

Job	Run time
build-all	1m 17s
build-java11	1m 9s
tests (driver, 8)	53s
tests (server, 8)	3m 15s
tests (test, 8)	6m 18s
tests (inmemory, -Dtest.skip.tp=false, 8)	30m 25s
tests (berkeleyje, 8)	8m 52s
tests (lucene, 8)	4m 26s
tests (driver, -Pjava-11, 11)	1m 12s
tests (server, -Pjava-11, 11)	3m 18s
tests (test, -Pjava-11, 11)	6m 37s
tests (inmemory, -Pjava-11, -Dtest.skip.tp=false, 11)	30m 45s
tests (berkeleyje, -Pjava-11, 11)	9m 7s
tests (lucene, -Pjava-11, 11)	4m 39s
	1h 52m 13s

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