chore(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -56,7 +56,7 @@
     "prettier": "3.7.4",
     "tailwindcss": "3.4.18",
     "typescript": "5.9.3",
-    "vitest": "3.2.4"
+    "vitest": "4.0.15"
   },
   "packageManager": "[email protected]",
   "engines": {