chore(deps): update test packages to v4

Author: renovate[bot]

package.json

@@ -54,14 +54,14 @@
     "@nuxt/eslint-config": "1.10.0",
     "@nuxt/module-builder": "1.0.2",
     "@nuxt/test-utils": "3.20.1",
-    "@vitest/coverage-v8": "3.2.4",
+    "@vitest/coverage-v8": "4.0.8",
     "bumpp": "10.3.1",
     "eslint": "9.39.1",
     "husky": "9.1.7",
     "lint-staged": "16.2.6",
     "nuxt": "4.2.1",
     "simple-git-hooks": "2.13.1",
-    "vitest": "3.2.4"
+    "vitest": "4.0.8"
   },
   "simple-git-hooks": {
     "pre-commit": "npx lint-staged"