Fixed safety issues up to 3/31 #2077

Job	Run time
set_matrix	1s
test (ubuntu-latest, 3.11, minimum)	9m 8s
test (ubuntu-latest, 3.11, latest)	8m 34s
test (ubuntu-20.04, 2.7, minimum, python:2.7.18-buster)	3m 15s
test (ubuntu-20.04, 2.7, latest, python:2.7.18-buster)	3m 51s
test (ubuntu-20.04, 3.5, minimum)	3m 13s
test (ubuntu-20.04, 3.5, latest)	5m 3s
test (ubuntu-20.04, 3.6, minimum)	3m 44s
test (ubuntu-latest, 3.7, minimum)	3m 32s
test (ubuntu-latest, 3.8, latest)	8m 11s
test (ubuntu-latest, 3.9, minimum)	9m 11s
test (ubuntu-latest, 3.9, ansible)	6m 14s
test (ubuntu-latest, 3.10, minimum)	9m 53s
test (ubuntu-latest, 3.12, latest)	11m 14s
test (macos-latest, 3.11, latest)	11m 46s
test_finish	12s
	1h 37m 2s

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