Merge branch 'greenkeeper/html-webpack-plugin-4.0.0' into pr/158

Author: unity

package.json

@@ -64,9 +64,9 @@
     "enzyme-to-json": "3.4.3",
     "eslint": "^6.0.1",
     "eslint-config-react": "1.1.7",
-    "eslint-loader": "3.0.3",
+    "eslint-loader": "3.0.4",
     "eslint-plugin-react": "^7.14.2",
-    "html-webpack-plugin": "3.2.0",
+    "html-webpack-plugin": "4.0.0",
     "jest": "^24.9.0",
     "jest-styled-components": "^6.3.3",
     "prettier": "^1.17.1",