Nightly unit tests, linux #515

Job	Run time
Nightly 3.8 git-test-automl	28m 20s
Nightly 3.8 git-test-modelunderstanding	15m 28s
Nightly 3.8 git-test-other	10m 45s
Nightly 3.8 git-test-parallel	6m 55s
Nightly 3.8 git-test-prophet	9m 44s
Nightly 3.9 git-test-automl	21m 10s
Nightly 3.9 git-test-modelunderstanding	11m 40s
Nightly 3.9 git-test-other	12m 9s
Nightly 3.9 git-test-parallel	6m 11s
Nightly 3.9 git-test-prophet	7m 38s
	2h 10m 0s

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