Tests

Increase test coverage requirement to 84% #1777

Job	Run time
check	27s
Test docker image	3m 13s
Inspect test runner output in the context of a Github Workflow	22s
Run test suite (ubuntu-20.04, 3.8)	3m 54s
Run test suite (ubuntu-20.04, 3.9)	4m 37s
Test we can build PyPI package	42s
Run test suite (ubuntu-20.04, 3.10)	3m 58s
Run test suite (ubuntu-22.04, 3.8)	4m 18s
Run test suite (ubuntu-22.04, 3.9)	4m 7s
Run test suite (ubuntu-22.04, 3.10)	4m 19s
Run test suite (windows-2019, 3.8)	2m 8s
Run test suite (windows-2019, 3.9)	1m 58s
Run test suite (windows-2019, 3.10)	1m 56s
Run test suite (macos-14, 3.8)	1m 23s
Run test suite (macos-14, 3.9)	53s
Run test suite (macos-14, 3.10)	49s
required-checks	2s
	39m 6s

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