chore(deps): update codecov/codecov-action to v4 #849

Job	Run time
flutter-test-analyze / Format	41s
flutter-test-analyze / Analyze	1m 1s
flutter-test-analyze / Test	1m 10s
flutter-build / WEB	5s
flutter-build / Android (apk)	6m 2s
flutter-build / iOS	3s
	9m 2s

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