Update dependencies

Kept eslint at v6 and eslint-plugin-react-hooks at v2.5 to avoid peer conflicts.

Author: Oblosys

examples/parent-child-demo/package.json

@@ -14,7 +14,7 @@
     "prop-types": "^15.7.2",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
-    "react-hot-loader": "^4.12.20",
+    "react-hot-loader": "^4.12.21",
     "react-lifecycle-visualizer": "^2.2.7"
   }
 }