chore(deps): update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -46,7 +46,7 @@
     "@nuxt/ui": "^2.22.3",
     "@vite-pwa/assets-generator": "^0.2.6",
     "@vite-pwa/nuxt": "^0.10.8",
-    "@vitest/coverage-v8": "^2.1.9",
+    "@vitest/coverage-v8": "^4.0.15",
     "@vue/test-utils": "^2.4.6",
     "@vueuse/nuxt": "^11.3.0",
     "eslint": "^9.39.1",
@@ -57,7 +57,7 @@
     "playwright-core": "^1.57.0",
     "simple-git-hooks": "^2.13.1",
     "type-fest": "^4.41.0",
-    "vitest": "^2.1.9",
+    "vitest": "^4.0.15",
     "vitest-environment-nuxt": "^1.0.1",
     "vitest-fetch-mock": "^0.4.5"
   },