chore(deps): update dependency zod to v4

Author: renovate[bot]

bun.lockb

@@ -70,7 +70,7 @@
     "tailwind-merge": "^3.0.1",
     "tailwindcss-animate": "^1.0.7",
     "vaul": "^1.1.0",
-    "zod": "^3.23.8"
+    "zod": "^4.1.12"
   },
   "devDependencies": {
     "@commitlint/cli": "^19.5.0",