build(deps): bump vite and nuxt in /examples/frameworks/nuxt3

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) to 7.1.5 and updates ancestor dependency [nuxt](https://github.com/nuxt/nuxt/tree/HEAD/packages/nuxt). These dependencies need to be updated together.


Updates `vite` from 6.1.3 to 7.1.5
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/main/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v7.1.5/packages/vite)

Updates `nuxt` from 3.7.4 to 3.19.1
- [Release notes](https://github.com/nuxt/nuxt/releases)
- [Commits](https://github.com/nuxt/nuxt/commits/v3.19.1/packages/nuxt)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 7.1.5
  dependency-type: indirect
- dependency-name: nuxt
  dependency-version: 3.19.1
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]