chore(package): update html-webpack-plugin to version 4.1.0

Closes #51

Author: greenkeeper[bot]

package.json

@@ -59,7 +59,7 @@
     "eslint-plugin-react": "^7.11.1",
     "eslint-plugin-react-hooks": "^1.6.0",
     "file-loader": "^3.0.0",
-    "html-webpack-plugin": "^3.2.0",
+    "html-webpack-plugin": "^4.1.0",
     "jest": "^23.6.0",
     "jest-styled-components": "^6.2.1",
     "jsdoc": "^3.5.5",