prepare for 4.0.1 release #488

Job	Run time
Ensure the code builds (OoniStableFullRelease)	2m 34s
Ensure the code builds (OoniStableFdroidRelease)	2m 26s
Ensure the code builds (DwStableFullRelease)	2m 19s
Ensure the code builds (DwStableFdroidRelease)	2m 28s
Run unit tests	2m 36s
Run instrumented tests (25, default)	11m 54s
Archive APKs (OoniStableFullDebug)	2m 13s
Run instrumented tests (25, google_apis)	11m 58s
Archive APKs (OoniStableFdroidDebug)	2m 0s
Run instrumented tests (29, default)	11m 56s
Archive APKs (OoniDevFullDebug)	2m 23s
Run instrumented tests (29, google_apis)	11m 57s
Archive APKs (OoniDevFullDebugAndroidTest)	2m 12s
Archive APKs (DwStableFullDebug)	2m 36s
Archive APKs (DwStableFdroidDebug)	3m 17s
Archive APKs (DwDevFullDebug)	2m 29s
Upload artifact to Firebase App Distribution	33s
	1h 17m 51s

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