Downgrade geckoview build-tools version to 29.0.2
In order to have less churn in our Android toolchain we downgrade the GeckoView build-tools version from 29.0.3 to 29.0.2. See: tor-browser-build#40126 (closed) for context.
In order to have less churn in our Android toolchain we downgrade the GeckoView build-tools version from 29.0.3 to 29.0.2. See: tor-browser-build#40126 (closed) for context.