TST: Fix side effect #2379 #4211

Job	Run time
pytest on windows	4m 53s
Check code style issues	23s
Build & verify package	19s
pytest on 3.7 (crypto-lib: cryptography)	3m 22s
pytest on 3.8 (crypto-lib: cryptography)	3m 47s
pytest on 3.9 (crypto-lib: cryptography)	3m 34s
pytest on 3.10 (crypto-lib: cryptography)	3m 44s
pytest on 3.11 (crypto-lib: cryptography)	3m 52s
pytest on 3.12 (crypto-lib: cryptography)	4m 47s
pytest on 3.7 (crypto-lib: pycryptodome)	3m 32s
pytest on 3.7 (crypto-lib: none)	3m 45s
Combine & check coverage.	13s
	36m 11s

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