Updated "firebase-admin" module and added "firebase-functions-t… (#8078)

examples/with-firebase-hosting/package.json

@@ -19,8 +19,9 @@
     "install-deps": "cd \"dist/functions\" && npm i"
   },
   "dependencies": {
-    "firebase-admin": "^6.3.0",
+    "firebase-admin": "^8.2.0",
     "firebase-functions": "^2.1.0",
+    "grpc": "^1.22.2",
     "next": "latest",
     "react": "^16.7.0",
     "react-dom": "^16.7.0"
@@ -29,6 +30,7 @@
     "@babel/cli": "^7.2.0",
     "cpx": "^1.5.0",
     "cross-env": "^5.2.0",
+    "firebase-functions-test": "^0.1.6",
     "firebase-tools": "^6.1.0",
     "rimraf": "^2.6.0"
   }