Summary:
Bump Gradle to 6.0.1, which has Java 13 support and many improvements. But also it'll help us to clean up deprecation warnings.
## Changelog
[Android] [Changed] - bump Gradle to 6.0.1
Pull Request resolved: https://github.com/facebook/react-native/pull/27290
Test Plan: RNTester app builds and runs as expected
Differential Revision: D18646942
Pulled By: mdvacca
fbshipit-source-id: 3ade353446cee315447b80011d05065ad6557d2d