Bump Android Build Tools to 29.0.2 in WORKSPACE (#304)
Bump Android Build Tools to 29.0.2 in WORKSPACE (#304)

Bazel's CI has upgraded from 28.0.2 to 29.0.2 on the worker machines some time ago and this is causing the tests to fail.
android/testing-samples,android/testing-samples,android/testing-samples,android/testing-samples,android/testing-samples