fix(package): update material-design-icons-iconfont to version 5.0.1

Author: greenkeeper[bot]

package.json

@@ -8,7 +8,7 @@
     "lint": "vue-cli-service lint"
   },
   "dependencies": {
-    "material-design-icons-iconfont": "^4.0.5",
+    "material-design-icons-iconfont": "^5.0.1",
     "register-service-worker": "^1.5.2",
     "roboto-fontface": "*",
     "vue": "^2.5.22",