chore(deps): update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -39,7 +39,7 @@
  "@nuxt/eslint-config": "^1.9.0",
  "@types/node": "^22.18.12",
  "@types/semver": "^7.7.1",
- "@vitest/coverage-v8": "^3.2.4",
+ "@vitest/coverage-v8": "^4.0.3",
  "changelogen": "^0.6.2",
  "eslint": "^9.38.0",
  "pkg-pr-new": "^0.0.60",
@@ -48,7 +48,7 @@
  "typescript": "^5.9.3",
  "unbuild": "^3.6.1",
  "vite": "^7.1.12",
- "vitest": "3.2.4",
+ "vitest": "4.0.3",
  "vue": "3.5.22"
  },
  "packageManager": "pnpm@10.19.0"