Updated sample to use latest module.

Author: phongcao

sample/package-lock.json

@@ -13,7 +13,7 @@
     "mem": "^4.0.0",
     "react": "16.9.0",
     "react-native": "0.61.5",
-    "react-native-azurenotificationhub": "^0.9.2"
+    "react-native-azurenotificationhub": "^0.9.3"
   },
   "devDependencies": {
     "@babel/core": "7.8.4",