Use CODECOV_TOKEN to upload coverage #488

Job	Run time
bootstrap / setup	3s
pytest / setup	3s
bootstrap / bootstrap (macos-latest, 3.8)	1m 17s
bootstrap / bootstrap (macos-latest, 3.9)	41s
bootstrap / bootstrap (macos-latest, 3.10)	41s
bootstrap / bootstrap (macos-latest, 3.11)	48s
bootstrap / bootstrap (macos-latest, 3.12)	40s
bootstrap / bootstrap (ubuntu-latest, 3.8)	1m 0s
bootstrap / bootstrap (ubuntu-latest, 3.9)	58s
bootstrap / bootstrap (ubuntu-latest, 3.10)	55s
bootstrap / bootstrap (ubuntu-latest, 3.11)	54s
bootstrap / bootstrap (ubuntu-latest, 3.12)	59s
bootstrap / bootstrap (windows-latest, 3.8)	1m 51s
bootstrap / bootstrap (windows-latest, 3.9)	1m 59s
bootstrap / bootstrap (windows-latest, 3.10)	2m 19s
bootstrap / bootstrap (windows-latest, 3.11)	1m 55s
bootstrap / bootstrap (windows-latest, 3.12)	2m 17s
bootstrap / bootstrap (ubuntu-20.04, 3.6)	49s
pytest / pytest (macos-latest, 3.8)	1m 21s
pytest / pytest (macos-latest, 3.9)	53s
pytest / pytest (macos-latest, 3.10)	53s
pytest / pytest (macos-latest, 3.11)	51s
pytest / pytest (macos-latest, 3.12)	54s
pytest / pytest (ubuntu-latest, 3.8)	4m 5s
pytest / pytest (ubuntu-latest, 3.9)	2m 4s
pytest / pytest (ubuntu-latest, 3.10)	1m 34s
pytest / pytest (ubuntu-latest, 3.11)	1m 31s
pytest / pytest (ubuntu-latest, 3.12)	2m 10s
pytest / pytest (windows-latest, 3.8)	2m 13s
pytest / pytest (windows-latest, 3.9)	2m 21s
pytest / pytest (windows-latest, 3.10)	2m 13s
pytest / pytest (windows-latest, 3.11)	2m 16s
pytest / pytest (windows-latest, 3.12)	2m 26s
pytest / pytest (ubuntu-20.04, 3.6)	1m 3s
	48m 57s

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