fix(deps): update dependency zod to v4

Author: renovate[bot]

bun.lockb

@@ -26,7 +26,7 @@
     "safe-regex": "^2.1.1",
     "typed-regex": "^0.0.8",
     "yaml": "^2.3.4",
-    "zod": "^3.22.5",
+    "zod": "^4.0.0",
     "zod-validation-error": "^3.1.0"
   },
   "devDependencies": {