Use gradle-build-action in main.yml & manually.yml

[Goooler]

Cache gradle with gradle-build-action instead of actions/cache like changes in #240 and descriptions in #229.

[Goooler]

And 3f634f9 to solve the warnings from IDEA, ref https://github.com/ReactiveCircus/android-emulator-runner#configurations.