Bump zod from 4.1.13 to 4.3.6 in /worker

Bumps [zod](https://github.com/colinhacks/zod) from 4.1.13 to 4.3.6.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v4.1.13...v4.3.6)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.3.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

worker/package-lock.json

@@ -16,6 +16,6 @@
     "dotenv": "^17.2.3",
     "playwright": "1.57.0",
     "redis": "^4.6.15",
-    "zod": "^4.1.13"
+    "zod": "^4.3.6"
   }
 }