chore(deps): bump ai from 5.0.56 to 5.0.81

Bumps [ai](https://github.com/vercel/ai) from 5.0.56 to 5.0.81.
- [Release notes](https://github.com/vercel/ai/releases)
- [Changelog](https://github.com/vercel/ai/blob/main/CHANGELOG.md)
- [Commits](https://github.com/vercel/ai/compare/ai@5.0.56...ai@5.0.81)

---
updated-dependencies:
- dependency-name: ai
  dependency-version: 5.0.81
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -33,7 +33,7 @@
   "dependencies": {
     "@ai-sdk/provider-utils": "^3.0.10",
     "@ax-llm/ax": "14.0.38",
-    "ai": "^5.0.50",
+    "ai": "^5.0.87",
     "zod": "^3.23.8"
   },
   "bugs": {