chore(deps): bump ai from 5.0.121 to 6.0.40

Bumps [ai](https://github.com/vercel/ai) from 5.0.121 to 6.0.40.
- [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@5.0.121...ai@6.0.40)

---
updated-dependencies:
- dependency-name: ai
  dependency-version: 6.0.40
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -92,7 +92,7 @@
     "@cucumber/messages": "31.2.0",
     "@xmldom/xmldom": "0.9.8",
     "acorn": "8.15.0",
-    "ai": "^5.0.60",
+    "ai": "^6.0.40",
     "arrify": "3.0.0",
     "axios": "1.13.2",
     "chalk": "4.1.2",