Bump zod from 4.1.8 to 4.1.9

Bumps [zod](https://github.com/colinhacks/zod) from 4.1.8 to 4.1.9.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v4.1.8...v4.1.9)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.1.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -18,7 +18,7 @@
     "@dotenvx/dotenvx": "^1.49.0",
     "fastify": "^5.6.0",
     "fastify-type-provider-zod": "^6.0.0",
-    "zod": "^4.1.8"
+    "zod": "^4.1.9"
   },
   "devDependencies": {
     "@types/node": "^24.3.1",