fix(app, ios): bump firebase-ios-sdk to 10.6.0

we are not exposing any new features, so just a fix / point release

Author: mikehardy

docs/index.md

@@ -233,7 +233,7 @@ Open your projects `/ios/Podfile` and add any of the globals shown below to the
 
 ```ruby
 # Override Firebase SDK Version
-$FirebaseSDKVersion = '10.5.0'
+$FirebaseSDKVersion = '10.6.0'
 ```
 
 Once changed, reinstall your projects pods via pod install and rebuild your project with `npx react-native run-ios`.

packages/app/package.json

@@ -65,7 +65,7 @@
   },
   "sdkVersions": {
     "ios": {
-      "firebase": "10.5.0",
+      "firebase": "10.6.0",
       "iosTarget": "11.0",
       "macosTarget": "10.13"
     },