chore(package): update css-loader to version 3.5.3

Closes #44

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "cheerio": "0.22.0",
     "compression": "1.6.2",
     "cross-env": "4.0.0",
-    "css-loader": "^0.28.0",
+    "css-loader": "^3.5.3",
     "eslint": "^3.19.0",
     "eslint-plugin-import": "^2.2.0",
     "eslint-watch": "^3.0.1",