chore(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -74,7 +74,7 @@
     "tailwindcss": "4.1.17",
     "typescript": "5.9.3",
     "typescript-eslint": "^8.11.0",
-    "vitest": "1.6.1",
+    "vitest": "4.0.15",
     "vue": "3.5.25",
     "vue-tsc": "^3.0.0"
   },