feat(package): update sass-loader to version 5.0.1 (#35)

BREAKING CHANGE: updated to sass-loader @ 5.0.1

Author: greenkeeperio-bot

package.json

@@ -48,7 +48,7 @@
   "dependencies": {
     "@easy-webpack/config-css": "^4.0.0",
     "node-sass": "^4.0.0",
-    "sass-loader": "^4.0.2"
+    "sass-loader": "^5.0.1"
   },
   "peerDependencies": {
     "@easy-webpack/core": "*"