fix(deps): update dependency zod to v4

Author: renovate[bot]

example/package.json

@@ -30,7 +30,7 @@
     "swagger-ui-react": "5.26.2",
     "valibot": "1.1.0",
     "yup": "1.6.1",
-    "zod": "3.25.76"
+    "zod": "4.0.4"
   },
   "devDependencies": {
     "@types/react": "19.1.8",

example/pnpm-lock.yaml

@@ -81,7 +81,7 @@
     "vite": "6.3.5",
     "vitest": "3.2.4",
     "yup": "1.6.1",
-    "zod": "3.25.76"
+    "zod": "4.0.4"
   },
   "peerDependencies": {
     "next": "*"