Fix coverage report #79

Job	Run time
build-package	42s
lint	1m 31s
unit-test (3.10, macos-latest)	52s
unit-test (3.10, ubuntu-latest)	1m 36s
unit-test (3.10, windows-latest)	1m 9s
unit-test (3.11, macos-latest)	36s
unit-test (3.11, ubuntu-latest)	1m 51s
unit-test (3.12, macos-latest)	39s
unit-test (3.12, ubuntu-latest)	1m 31s
unit-test (3.12, windows-latest)	1m 40s
unit-test (3.7, ubuntu-latest)	1m 32s
unit-test (3.7, windows-latest)	1m 24s
unit-test (3.8, macos-latest)	1m 0s
unit-test (3.8, ubuntu-latest)	1m 24s
unit-test (3.8, windows-latest)	1m 26s
unit-test (3.9, ubuntu-latest)	1m 19s
unit-test (3.9, macos-latest)	49s
unit-test (3.9, windows-latest)	1m 27s
unit-test (pypy-3.10, macos-latest)	1m 30s
unit-test (pypy-3.10, ubuntu-latest)	2m 39s
unit-test (pypy-3.10, windows-latest)	3m 2s
publish-package	23s
sign-package	17s
Indicate completion to coveralls.io	0s
	30m 19s

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