chore(deps): update dependency @nuxt/ui-pro to v3

Author: renovate[bot]

package.json

@@ -21,7 +21,7 @@
     "@nuxt/content": "^2.13.4",
     "@nuxt/fonts": "^0.11.2",
     "@nuxt/image": "^1.10.0",
-    "@nuxt/ui-pro": "^1.8.0",
+    "@nuxt/ui-pro": "^3.1.0",
     "@nuxtjs/mdc": "^0.17.0",
     "@vueuse/nuxt": "^11.3.0",
     "feed": "^4.2.2",