ci: fix coverage #11

Job	Run time
mypy (3.8)	24s
test (3.8, ubuntu-latest)	55s
mypy (3.9)	23s
test (3.8, windows-latest)	1m 54s
mypy (3.10)	22s
test (3.9, ubuntu-latest)	50s
mypy (3.11)	22s
test (3.9, windows-latest)	2m 22s
mypy (3.12)	27s
test (3.10, ubuntu-latest)	57s
test (3.10, windows-latest)	2m 3s
test (3.11, ubuntu-latest)	51s
test (3.11, windows-latest)	1m 51s
test (3.12, ubuntu-latest)	1m 0s
test (3.12, windows-latest)	2m 12s
combine coverage and check for 100%	8s
	17m 1s

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