Bump sanity from 3.1.2 to 3.12.1

Bumps [sanity](https://github.com/sanity-io/sanity/tree/HEAD/packages/sanity) from 3.1.2 to 3.12.1.
- [Release notes](https://github.com/sanity-io/sanity/releases)
- [Commits](https://github.com/sanity-io/sanity/commits/v3.12.1/packages/sanity)

---
updated-dependencies:
- dependency-name: sanity
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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