chore(deps): update dependency @ai-sdk/vue to v4

Author: renovate[bot]

package.json

@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@ai-sdk/gateway": "^3.0.139",
-    "@ai-sdk/vue": "^3.0.214",
+    "@ai-sdk/vue": "^4.0.20",
     "@comark/nuxt": "^0.4.0",
     "@electric-sql/pglite": "^0.5.3",
     "@iconify-json/lucide": "^1.2.114",