react-native-firebase

chore(sdks, tests): update SDKs / Fix tests compile for xcode12 (#4401)

* Upgrade firebase sdk version

Upgrade firebase sdk version to 25.12.0 to fix [issue #4189](https://github.com/invertase/react-native-firebase/issues/4189)

* Update iid android library

Co-authored-by: Mike Hardy <github@mikehardy.net>

* update sdk for ios firebase, iid and playServicesAuth
* update firebase bom version
* Update FirebaseSDKVersion
* Install firebase-tools as dev dep in tests, reference locally
* De-integrate pre-compiled firestore, incompatible with Xcode12+detox

https://github.com/invertase/firestore-ios-sdk-frameworks/issues/15

* Exclude arm64/i386 from simulator build archs for Xcode12 compatibility

Without these, there are linker failures as Xcode12 attempts to build for
all archs, even when it's not really possible

* Workaround upstream MLKit dependency-related compile failures

https://firebase.google.com/support/release-notes/android#mlkit-self-serve-fixes
https://github.com/firebase/firebase-android-sdk/issues/1904

* Use Xcode "latest-stable" (12 now) in E2E CI

This should fix #4397

Co-authored-by: Mujtaba F. Radhi <al.mujtaba@hotmail.com>