fix(deps): update dependency zod to v4

Author: renovate[bot]

package.json

@@ -46,7 +46,7 @@
     "tw-animate-css": "^1.3.4",
     "typesense": "^2.0.3",
     "vaul": "^1.1.2",
-    "zod": "^3.25.64"
+    "zod": "^4.0.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4.1.10",