feat(sdk): bump firebase-ios-sdk to 8.8.0

Author: mikehardy

packages/app/package.json

@@ -65,7 +65,7 @@
   },
   "sdkVersions": {
     "ios": {
-      "firebase": "8.7.0"
+      "firebase": "8.8.0"
     },
     "android": {
       "minSdk": 16,