Update all dependencies to latest

Author: Oblosys

examples/parent-child-demo/package.json

@@ -8,13 +8,13 @@
   "start": "echo \"Error: This dummy package.json is only for StackBlitz deployment. Use top-level package.json instead.\" && exit 1"
   },
   "devDependencies": {
-    "react-scripts": "^2.1.3"
+    "react-scripts": "^2.1.8"
   },
   "dependencies": {
-    "prop-types": "^15.6.2",
-    "react": "16.7.0",
-    "react-dom": "16.7.0",
-    "react-hot-loader": "4.6.3",
+    "prop-types": "^15.7.2",
+    "react": "16.8.5",
+    "react-dom": "16.8.5",
+    "react-hot-loader": "4.8.0",
     "react-lifecycle-visualizer": "^2.2.0"
   }
 }