chore(deps): update dependency css-loader to v2 (#466)

Author: renovate[bot]

package-lock.json

@@ -100,7 +100,7 @@
     "babel-loader": "8.0.4",
     "cheerio": "1.0.0-rc.2",
     "copy-webpack-plugin": "4.6.0",
-    "css-loader": "1.0.1",
+    "css-loader": "2.0.0",
     "express": "4.16.4",
     "express-http-proxy": "1.5.0",
     "extract-text-webpack-plugin": "3.0.2",