chore(deps): update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -61,7 +61,7 @@
     "@types/react-dom": "~19.2.0",
     "@types/sinon": "~17.0.0",
     "@vitejs/plugin-react": "~5.0.0",
-    "@vitest/coverage-v8": "~3.2.0",
+    "@vitest/coverage-v8": "~4.0.0",
     "eslint": "~9.38.0",
     "jsdom": "~27.0.0",
     "prettier": "~3.6.0",
@@ -70,7 +70,7 @@
     "standard-version": "~9.5.0",
     "tsup": "~8.5.0",
     "typescript": "~5.9.0",
-    "vitest": "~3.2.0"
+    "vitest": "~4.0.0"
   },
   "packageManager": "[email protected]"
 }