Update minor/patch dependencies to latest + Audit fix handlebars

npm update handlebars --depth 6

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": "^3.1.1"
+    "react-scripts": "^3.3.0"
   },
   "dependencies": {
     "prop-types": "^15.7.2",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-hot-loader": "^4.12.11",
+    "react": "^16.12.0",
+    "react-dom": "^16.12.0",
+    "react-hot-loader": "^4.12.18",
     "react-lifecycle-visualizer": "^2.2.5"
   }
 }

examples/parent-child-demo/src/samples/Legacy.js

@@ -1,4 +1,5 @@
 /* eslint arrow-body-style: 0, max-classes-per-file: 0, no-unused-vars: [1, { "args": "none" }] */
+/* eslint react/no-deprecated: 0 */
 import React, { Component } from 'react';
 import { traceLifecycle } from 'react-lifecycle-visualizer';