chore(deps): update dependency @ai-sdk/gateway to v1.0.0-beta.15 (#18)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -17,7 +17,7 @@
     "db:push": "drizzle-kit push"
   },
   "dependencies": {
-    "@ai-sdk/gateway": "1.0.0-beta.14",
+    "@ai-sdk/gateway": "1.0.0-beta.15",
     "@ai-sdk/vue": "2.0.0-beta.17",
     "@iconify-json/logos": "^1.2.5",
     "@iconify-json/lucide": "^1.2.58",