chore: prepare release for 4.0.2 #510

Job	Run time
Ensure the code builds (OoniStableFullRelease)	3m 31s
Ensure the code builds (OoniStableFdroidRelease)	3m 4s
Ensure the code builds (DwStableFullRelease)	3m 23s
Ensure the code builds (DwStableFdroidRelease)	2m 59s
Run unit tests	2m 34s
Run instrumented tests (25, default)	11m 46s
Archive APKs (OoniStableFullDebug)	2m 2s
Run instrumented tests (25, google_apis)	11m 52s
Archive APKs (OoniStableFdroidDebug)	2m 6s
Run instrumented tests (29, default)	11m 49s
Archive APKs (OoniDevFullDebug)	2m 8s
Run instrumented tests (29, google_apis)	11m 51s
Archive APKs (OoniDevFullDebugAndroidTest)	2m 9s
Archive APKs (DwStableFullDebug)	2m 14s
Archive APKs (DwStableFdroidDebug)	2m 1s
Archive APKs (DwDevFullDebug)	2m 12s
Upload artifact to Firebase App Distribution	42s
	1h 18m 23s

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