react-native-firebase

feat(crashlytics)!: upgrade to new Firebase Crashlytics SDK (#3580)

Goodbye Fabric, hello Firebase Crashlytics.

BREAKING CHANGE: This is a breaking change to remove the use of the Fabric SDKs.

Co-authored-by: David Buchan-Swanson <david.buchanswanson@gmail.com>
Co-authored-by: Mike Diarmid <mike.diarmid@gmail.com>
[publish]