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

Closes #33

Author: greenkeeper[bot]

package.json

@@ -59,7 +59,7 @@
     "babel-jest": "^23.6.0",
     "babel-loader": "^8.0.0-beta.4",
     "cross-env": "^5.2.0",
-    "css-loader": "^2.0.1",
+    "css-loader": "^3.3.0",
     "enzyme": "^3.7.0",
     "enzyme-adapter-react-16": "^1.7.0",
     "file-loader": "^2.0.0",