Update dependency vitest to ^4.1.1

Author: renovate[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "typescript": "^5.9.3",
     "vite": "^7.3.1",
     "vite-plugin-dts": "^4.5.4",
-    "vitest": "^4.0.18",
+    "vitest": "^4.1.1",
     "@typescript/vfs": "^1.6.4"
   },
   "peerDependencies": {