make tests parallel again #270

Job	Run time
test / Build project on ubuntu-latest	11m 18s
test / run-tests (ubuntu-latest, jvm)	5m 23s
test / Build project on macos-14	37m 2s
test / run-tests (ubuntu-latest, jvm11)	5m 19s
test / Build project on windows-latest	16m 22s
test / run-tests (ubuntu-latest, jvm17)	5m 24s
test / run-tests (ubuntu-latest, jvm21)	5m 20s
test / run-tests (ubuntu-latest, js)	4m 42s
test / run-tests (ubuntu-latest, native)	6m 30s
test / run-tests (macos-14, macos)	5m 7s
test / run-tests (macos-14, ios)	6m 25s
test / run-tests (macos-14, watchos)	7m 5s
test / run-tests (macos-14, tvos)	9m 57s
test / run-tests (windows-latest, native)	6m 27s
test / Publish test report	15s
publish	0s
	2h 12m 36s

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