chore(deps): update devdependency vitest to v4

Author: renovate[bot]

package.json

@@ -53,7 +53,7 @@
     "semantic-release": "^24.2.0",
     "typescript": "^5.6.3",
     "unbuild": "^2.0.0",
-    "vitest": "^2.1.4"
+    "vitest": "^4.1.6"
   },
   "peerDependencies": {
     "@formatjs/intl": "^2.7.1"