chore(package): update sass to version 1.24.1

Closes #547

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "file-loader": "5.0.2",
     "mini-css-extract-plugin": "0.8.2",
     "postcss-loader": "3.0.0",
-    "sass": "1.23.7",
+    "sass": "1.24.1",
     "sass-loader": "8.0.0",
     "stylelint": "12.0.1",
     "stylelint-order": "3.1.1",