Runs the tests nightly #1069

Job	Run time
Run tests with Python 3.7 on ubuntu-20.04	5m 34s
Run tests with Python 3.7 on windows-latest	9m 35s
Run tests with Python 3.8 on ubuntu-20.04	5m 47s
Run tests with Python 3.8 on windows-latest	8m 20s
Run tests with Python 3.9 on ubuntu-20.04	5m 53s
Run tests with Python 3.9 on windows-latest	9m 34s
Run tests with Python 3.10 on ubuntu-20.04	5m 55s
Run tests with Python 3.10 on windows-latest	9m 44s
Run tests with Python 3.11 on ubuntu-20.04	5m 41s
Run tests with Python 3.11 on windows-latest	8m 28s
Run tests with Python 3.12 on ubuntu-20.04	6m 0s
Run tests with Python 3.12 on windows-latest	8m 22s
Run tests with Python pypy-3.9 on ubuntu-20.04	13m 56s
	1h 42m 49s

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