chore(deps-dev): bump json-schema-to-typescript in /docs

Bumps [json-schema-to-typescript](https://github.com/bcherny/json-schema-to-typescript) from 13.1.2 to 15.0.2.
- [Changelog](https://github.com/bcherny/json-schema-to-typescript/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bcherny/json-schema-to-typescript/commits)

---
updated-dependencies:
- dependency-name: json-schema-to-typescript
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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