Bump zod from 3.25.76 to 4.3.6 in /gremlin-js

Bumps [zod](https://github.com/colinhacks/zod) from 3.25.76 to 4.3.6.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.25.76...v4.3.6)

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

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

Author: dependabot[bot]

gremlin-js/gremlin-mcp/package.json

@@ -50,7 +50,7 @@
     "effect": "^3.17.9",
     "gremlin": "4.0.0-beta.2",
     "winston": "^3.17.0",
-    "zod": "^3.25.76"
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "@eslint/js": "^10.0.0",