Bump ai from 4.0.31 to 4.0.40

Bumps [ai](https://github.com/vercel/ai) from 4.0.31 to 4.0.40.
- [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@4.0.31...ai@4.0.40)

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

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

package.json

@@ -20,7 +20,7 @@
     "@ai-sdk/google": "^1.0.12",
     "@ai-sdk/openai": "^1.0.13",
     "@types/jest": "^29.5.14",
-    "ai": "^4.0.26",
+    "ai": "^4.0.40",
     "dotenv": "^16.4.7",
     "node-cron": "^3.0.3",
     "ollama-ai-provider": "^1.1.0",