Runs the tests nightly #1077

Job	Run time
Run tests with Python 3.7 on ubuntu-20.04	5m 38s
Run tests with Python 3.7 on windows-latest	8m 39s
Run tests with Python 3.8 on ubuntu-20.04	6m 11s
Run tests with Python 3.8 on windows-latest	8m 48s
Run tests with Python 3.9 on ubuntu-20.04	6m 12s
Run tests with Python 3.9 on windows-latest	8m 17s
Run tests with Python 3.10 on ubuntu-20.04	6m 19s
Run tests with Python 3.10 on windows-latest	9m 26s
Run tests with Python 3.11 on ubuntu-20.04	5m 47s
Run tests with Python 3.11 on windows-latest	8m 50s
Run tests with Python 3.12 on ubuntu-20.04	5m 45s
Run tests with Python 3.12 on windows-latest	8m 10s
Run tests with Python pypy-3.9 on ubuntu-20.04	34s
	1h 28m 36s

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