Squashed 'external/workload-automation/' changes from 06b50810..0b558e40

0b558e40 Upgrade Gradle to 7.2 and Android Gradle plugin to 4.2.
c023b985 doc: update coding guide with APK rebuild info
284cc60b docs: Fix typo

git-subtree-dir: external/workload-automation
git-subtree-split: 0b558e408c9ea490b57de340c66d308b937f5e84