feat: use latest android & ios Firebase SDKs version (invertase#3956)

* chore(*): version upgrades

* chore(*, ios): update GoogleUtilities test/ios

* chore(_,ios): update pod lock

* chore(crashlytics, android): update SDK for tests

* chore: move google-services plugin for gradle

* chore: ios sdk upgrade

* chore: update test Podfile.lock

RNFBApp.podspec

@@ -1,7 +1,7 @@
 require 'json'
 require './firebase_json'
 package = JSON.parse(File.read(File.join(__dir__, 'package.json')))
-firebase_sdk_version = package['sdkVersions']['ios']['firebase'] || '~> 6.27.0'
+firebase_sdk_version = package['sdkVersions']['ios']['firebase'] || '~> 6.28.1'
 
 Pod::Spec.new do |s|
   s.name                = "RNFBApp"

android/build.gradle

@@ -11,7 +11,7 @@ buildscript {
     }
 
     dependencies {
-      classpath("com.android.tools.build:gradle:3.5.2")
+      classpath("com.android.tools.build:gradle:4.0.0")
     }
   }
 }

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

package.json

@@ -67,7 +67,7 @@
   },
   "sdkVersions": {
     "ios": {
-      "firebase": "~> 6.27.0"
+      "firebase": "~> 6.28.1"
     },
     "android": {
       "firebase": "25.5.0"