Nightly unit tests, linux #476

Job	Run time
Nightly 3.8 git-test-automl	27m 30s
Nightly 3.8 git-test-modelunderstanding	15m 10s
Nightly 3.8 git-test-other	9m 52s
Nightly 3.8 git-test-parallel	5m 19s
Nightly 3.8 git-test-prophet	7m 36s
Nightly 3.9 git-test-automl	29m 50s
Nightly 3.9 git-test-modelunderstanding	14m 43s
Nightly 3.9 git-test-other	11m 58s
Nightly 3.9 git-test-parallel	5m 11s
Nightly 3.9 git-test-prophet	9m 6s
	2h 16m 15s

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