Bump vite and sanity in /sanity

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) to 6.3.6 and updates ancestor dependency [sanity](https://github.com/sanity-io/sanity/tree/HEAD/packages/sanity). These dependencies need to be updated together.


Updates `vite` from 4.5.3 to 6.3.6
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v6.3.6/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v6.3.6/packages/vite)

Updates `sanity` from 3.48.0 to 3.99.0
- [Release notes](https://github.com/sanity-io/sanity/releases)
- [Changelog](https://github.com/sanity-io/sanity/blob/main/packages/sanity/CHANGELOG.md)
- [Commits](https://github.com/sanity-io/sanity/commits/v3.99.0/packages/sanity)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 6.3.6
  dependency-type: indirect
- dependency-name: sanity
  dependency-version: 3.99.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]