fix: upgrade zod from 4.4.1 to 4.4.3 (#3403)

Snyk has created this PR to upgrade zod from 4.4.1 to 4.4.3.

See this package in npm:
zod

See this project in Snyk:
https://app.snyk.io/org/docs-wmk/project/69782e43-c85b-4c27-afd1-ad863be7a38a?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

Author: nkammah

src/Elastic.Documentation.Site/package-lock.json

@@ -134,7 +134,7 @@
     "tippy.js": "6.3.7",
     "ua-parser-js": "2.0.9",
     "uuid": "14.0.0",
-    "zod": "4.4.1",
+    "zod": "4.4.3",
     "zustand": "5.0.12"
   }
 }