[CI] Update android pipeline to enable autoscaling

Summary: Run this workflow within reactnativecommunity/react-native-android:latest to enable autoscaling.

Test Plan: Buildkite CI

Reviewers: def-au1t, palys-swm, yayabosh, geekbrother, ashoat

Reviewed By: ashoat

Subscribers: ashoat, Adrian

Differential Revision: https://phab.comm.dev/D4406