chore(package): update css-loader to version 3.3.0

Closes #97

Author: greenkeeper[bot]

package.json

@@ -128,7 +128,7 @@
     "boiler-room-custodian": "^0.6.2",
     "concurrently": "^3.1.0",
     "cross-env": "^5.0.1",
-    "css-loader": "^0.28.4",
+    "css-loader": "^3.3.0",
     "css-modules-require-hook": "^4.0.6",
     "devtron": "^1.4.0",
     "electron": "1.8.4",