Bump codecov/codecov-action from 5 to 6 in the gha-updates group #368

Job	Run time
pytester (ubuntu-latest, 3.11, oldest)	9s
pytester (ubuntu-latest, 3.13, oldest)	13s
pytester (ubuntu-latest, 3.10, latest)	15s
pytester (ubuntu-latest, 3.12, oldest)	13s
pytester (ubuntu-latest, 3.11, latest)	13s
pytester (macOS-latest, 3.11, oldest)	15s
pytester (ubuntu-latest, 3.13, latest)	9s
pytester (macOS-latest, 3.13, oldest)	12s
pytester (ubuntu-latest, 3.12, latest)	11s
pytester (macOS-latest, 3.12, oldest)	15s
pytester (macOS-latest, 3.12, latest)	13s
pytester (macOS-latest, 3.11, latest)	11s
pytester (macOS-latest, 3.10, oldest)	29s
pytester (macOS-latest, 3.10, latest)	26s
pytester (macOS-latest, 3.13, latest)	13s
pytester (ubuntu-latest, 3.10, oldest)	12s
tests-guardian	2s
	3m 51s

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