Update dependency vitest to v4

Author: renovate[bot]

package.json

@@ -41,6 +41,6 @@
     "prettier": "3.3.3",
     "simple-git-hooks": "2.11.1",
     "typescript": "5.6.3",
-    "vitest": "2.1.5"
+    "vitest": "4.0.18"
   }
 }