vuetify: update mdi icon set

cateditor/package.json

@@ -17,6 +17,7 @@
     "vuex": "^3.1.2"
   },
   "devDependencies": {
+    "@mdi/font": "^4.7.95",
     "@vue/cli": "^4.1.2",
     "@vue/cli-plugin-babel": "^4.1.2",
     "@vue/cli-plugin-eslint": "^4.1.2",
@@ -27,7 +28,6 @@
     "eslint-plugin-vue": "^6.1.2",
     "eslint-plugin-vuetify": "^1.0.0-beta.5",
     "fibers": "^4.0.2",
-    "material-design-icons-iconfont": "^5.0.1",
     "node-sass": "^4.13.0",
     "sass": "^1.24.4",
     "sass-loader": "^8.0.2",