Enable coverage tracking in CI #15

Job	Run time
pytest / setup	2s
pytest / pytest (macos-latest, 3.8)	1m 15s
pytest / pytest (macos-latest, 3.9)	51s
pytest / pytest (macos-latest, 3.10)	34s
pytest / pytest (macos-latest, 3.11)	34s
pytest / pytest (macos-latest, 3.12)	37s
pytest / pytest (ubuntu-22.04, 3.8)	8m 50s
pytest / pytest (ubuntu-22.04, 3.9)	3m 23s
pytest / pytest (ubuntu-22.04, 3.10)	1m 4s
pytest / pytest (ubuntu-22.04, 3.11)	10m 18s
pytest / pytest (ubuntu-22.04, 3.12)	1m 35s
pytest / pytest (windows-latest, 3.8)	1m 36s
pytest / pytest (windows-latest, 3.9)	1m 51s
pytest / pytest (windows-latest, 3.10)	1m 58s
pytest / pytest (windows-latest, 3.11)	2m 4s
pytest / pytest (windows-latest, 3.12)	2m 6s
pytest / pytest (ubuntu-20.04, 3.6)	37s
	39m 15s

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