Update vitest monorepo to v4

Author: renovate[bot]

packages/core/package.json

@@ -56,9 +56,9 @@
     "@gossi/config-eslint": "^1.3.0",
     "@gossi/config-prettier": "^1.1.0",
     "@testing-library/dom": "10.4.1",
-    "@vitest/browser": "^3.2.4",
-    "@vitest/coverage-istanbul": "^3.2.4",
-    "@vitest/ui": "^3.2.4",
+    "@vitest/browser": "^4.0.17",
+    "@vitest/coverage-istanbul": "^4.0.17",
+    "@vitest/ui": "^4.0.17",
     "eslint": "^9.30.1",
     "playwright": "^1.57.0",
     "prettier": "^3.5.3",
@@ -68,7 +68,7 @@
     "typescript": "5.9.3",
     "valibot": "^1.2.0",
     "vite": "^7.3.1",
-    "vitest": "3.2.4",
+    "vitest": "4.0.17",
     "vitest-browser-html": "^0.1.3"
   },
   "engines": {