chore(deps): update devdependency vitest to v4

Author: renovate[bot]

package.json

@@ -76,7 +76,7 @@
     "nuxt": "^4.1.2",
     "release-it": "^19.0.5",
     "typescript": "^5.8.3",
-    "vitest": "^3.2.4",
+    "vitest": "^4.0.7",
     "vitest-environment-nuxt": "^1.0.1",
     "vue-tsc": "^3.1.3"
   },