fix(deps): update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -64,7 +64,7 @@
     "jsdom": "^27.0.0",
     "tsup": "^8.5.0",
     "typescript": "^5.8.3",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.0"
   },
   "devDependencies": {
     "@commitlint/cli": "^20.0.0",