Bump zod from 3.25.76 to 4.6.5

Bumps [zod](https://github.com/colinhacks/zod) from 3.25.76 to 4.6.5.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.25.76...v4.6.5)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.6.5
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -88,7 +88,7 @@
         "privacy-test-pages": "github:duckduckgo/privacy-test-pages#1.3.6",
         "punycode": "2.3.1",
         "tldts": "^7.0.12",
-        "zod": "^3.25.67"
+        "zod": "^4.6.5"
     },
     "workspaces": [
         "packages/privacy-grade",