Update dependency nuxt to v3 [SECURITY]

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
   "dependencies": {
     "@nuxt/content": "^1.14.0",
     "@tailwindcss/typography": "^0.5.8",
-    "nuxt": "^2.15.4",
+    "nuxt": "^3.0.0",
     "prism-themes": "^1.6.0",
     "vue-matomo": "^4.1.0"
   },