chore(deps): update devdependency vitest to v4

Author: renovate[bot]

package.json

@@ -54,6 +54,6 @@
     "leaflet.markercluster": "^1.5.3",
     "nuxt": "^4.1.2",
     "vitepress": "^1.6.4",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.6"
   }
 }