chore(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -116,7 +116,7 @@
     "unbuild": "3.6.1",
     "unocss": "^66.5.4",
     "vite": "^7.1.10",
-    "vitest": "^3.2.4",
+    "vitest": "^4.0.8",
     "vue": "^3.5.22"
   },
   "pnpm": {