chore(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
     "tsx": "4.19.3",
     "turbo": "2.4.4",
     "typescript": "5.8.3",
-    "vitest": "2.1.9",
+    "vitest": "4.0.6",
     "wrangler": "4.2.0"
   },
   "pnpm": {