fix(security): upgrade css-loader to ^3.2.0

Author: afriestad

package.json

@@ -32,7 +32,7 @@
     "connect-history-api-fallback": "^1.5.0",
     "cosmiconfig": "^5.0.6",
     "cross-spawn": "^6.0.5",
-    "css-loader": "^0.28.9",
+    "css-loader": "^3.2.0",
     "dotenv": "^5.0.0",
     "elm": "0.19.0-bugfix6",
     "elm-hot-webpack-loader": "^1.0.2",