Update dependency vitest to v4 [SECURITY]

Author: renovate[bot]

package.json

@@ -90,7 +90,7 @@
     "typescript-eslint": "8.46.2",
     "vite": "7.1.12",
     "vitepress": "1.6.4",
-    "vitest": "3.2.4"
+    "vitest": "4.1.0"
   },
   "peerDependencies": {
     "prettier": "^3.0.0"