chore(deps): bump zod from 3.24.1 to 4.1.13

Bumps [zod](https://github.com/colinhacks/zod) from 3.24.1 to 4.1.13.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.24.1...v4.1.13)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.1.13
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

agent/package.json

@@ -14,7 +14,7 @@
     "dotenv": "^16.6.1",
     "express": "^4.21.2",
     "oidc-provider": "^8.5.3",
-    "zod": "^3.25.76"
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",