deps: Update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -160,7 +160,7 @@
     "tsup": "^8.3.0",
     "typescript": "^5.6.3",
     "vite": "^6.0.0",
-    "vitest": "^2.1.3",
+    "vitest": "^4.0.0",
     "webpack": "^5.95.0"
   },
   "public": true,