chore(deps): update dependency node-sass to v4.11.0 (#469)

Author: renovate[bot]

package-lock.json

@@ -112,7 +112,7 @@
     "json-server": "0.14.0",
     "local-web-server": "2.6.0",
     "node-noop": "1.0.0",
-    "node-sass": "4.10.0",
+    "node-sass": "4.11.0",
     "nyc": "github:poetapp/nyc#fbc2ed1",
     "postcss-loader": "3.0.0",
     "react-docgen-typescript-webpack-plugin": "1.1.0",