Bump OSS Android build to SDK 31 (#32606)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/32606

Updates OSS builds for internals and template to target SDK 31, corresponding to Android 12.

Changelog:
[Updated][Android] - Bump Android compile and target SDK to 31

Reviewed By: cortinico

Differential Revision: D32107409

fbshipit-source-id: 57f219d33e884200ca4f49e1afe1bfd65b0d6315