tests

Fix linter issues #466

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	15s
Tests (8.1, ubuntu-latest, prefer-stable)	16s
Tests (8.1, macos-latest, prefer-lowest)	1m 29s
Tests (8.1, macos-latest, prefer-stable)	1m 23s
Tests (8.1, windows-latest, prefer-lowest)	43s
Tests (8.1, windows-latest, prefer-stable)	38s
Tests (8.2, ubuntu-latest, prefer-lowest)	14s
Tests (8.2, ubuntu-latest, prefer-stable)	18s
Tests (8.2, macos-latest, prefer-lowest)	1m 28s
Tests (8.2, macos-latest, prefer-stable)	1m 9s
Tests (8.2, windows-latest, prefer-lowest)	40s
Tests (8.2, windows-latest, prefer-stable)	39s
Tests (8.3, ubuntu-latest, prefer-lowest)	17s
Tests (8.3, ubuntu-latest, prefer-stable)	12s
Tests (8.3, macos-latest, prefer-lowest)	1m 51s
Tests (8.3, macos-latest, prefer-stable)	1m 41s
Tests (8.3, windows-latest, prefer-lowest)	41s
Tests (8.3, windows-latest, prefer-stable)	45s
Tests (8.4, ubuntu-latest, prefer-lowest)	15s
Tests (8.4, ubuntu-latest, prefer-stable)	13s
Tests (8.4, macos-latest, prefer-lowest)	1m 58s
Tests (8.4, macos-latest, prefer-stable)	1m 55s
Tests (8.4, windows-latest, prefer-lowest)	43s
Tests (8.4, windows-latest, prefer-stable)	40s
	20m 23s

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