chore(deps): bump nuxt from 3.17.5 to 4.2.0 in /playground

Bumps [nuxt](https://github.com/nuxt/nuxt/tree/HEAD/packages/nuxt) from 3.17.5 to 4.2.0.
- [Release notes](https://github.com/nuxt/nuxt/releases)
- [Commits](https://github.com/nuxt/nuxt/commits/v4.2.0/packages/nuxt)

---
updated-dependencies:
- dependency-name: nuxt
  dependency-version: 4.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

playground/package.json

@@ -11,7 +11,7 @@
     "@libsql/client": "^0.15.15",
     "@nuxt/ui": "^2.21.1",
     "@nuxthub/core": "^0.9.0",
-    "nuxt": "^3.17.5"
+    "nuxt": "^4.2.0"
   },
   "devDependencies": {
     "@iconify-json/heroicons": "^1.2.3",