chore(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -51,7 +51,7 @@
     "rollup-plugin-vue": "6.0.0",
     "typescript": "5.8.3",
     "vite": "6.2.5",
-    "vitest": "2.1.9",
+    "vitest": "4.0.4",
     "vue": "3.5.13"
   },
   "publishConfig": {