chore(deps): update dependency zod to v4

Author: renovate[bot]

package.json

@@ -99,7 +99,7 @@
     "typescript": "6.0.3",
     "use-immer": "0.11.0",
     "yaml": "2.8.3",
-    "zod": "3.25.76"
+    "zod": "4.4.3"
   },
   "devDependencies": {
     "@bufbuild/buf": "1.61.0",