Fix app-check dep version

Author: hsubox76

packages/firebase/package.json

@@ -57,7 +57,7 @@
     "@firebase/performance": "0.4.12",
     "@firebase/remote-config": "0.1.37",
     "@firebase/analytics": "0.6.10",
-    "@firebase/app-check": "0.1.0",
+    "@firebase/app-check": "0.0.1",
     "@firebase/util": "1.1.0"
   },
   "devDependencies": {