chore(deps): update devdependency vitest to v4

Author: renovate[bot]

package.json

@@ -42,7 +42,7 @@
     "husky": "9.1.7",
     "prettier": "3.5.3",
     "typescript": "5.8.3",
-    "vitest": "2.1.9"
+    "vitest": "4.0.9"
   },
   "packageManager": "pnpm@10.10.0",
   "engines": {