Merge pull request #768 from substancelab/bump_webpacker

Bump webpacker

Author: koppen

package.json

@@ -9,7 +9,7 @@
     "@babel/polyfill": "^7.0.0",
     "@babel/preset-env": "^7.10.3",
     "@rails/ujs": "^6.1.0",
-    "@rails/webpacker": "^5.2.1",
+    "@rails/webpacker": "^5.4.2",
     "autoprefixer": "^10.0.1",
     "babel-loader": "^8.1.0",
     "coffee-loader": "^1.0.1",
@@ -29,7 +29,7 @@
     "sass-loader": "^10.0.3",
     "standard": "^16.0.1",
     "style-loader": "^2.0.0",
-    "webpack-dev-server": "^3.11.0"
+    "webpack-dev-server": "^4.2.0"
   },
   "devDependencies": {
     "prettier": "2.1.2"