Bump Submodule/github/rest-api-description from 60482fa to 2124d78

Bumps [Submodule/github/rest-api-description](https://github.com/github/rest-api-description) from `60482fa` to `2124d78`.
- [Release notes](https://github.com/github/rest-api-description/releases)
- [Commits](github/rest-api-description@60482fa...2124d78)

---
updated-dependencies:
- dependency-name: Submodule/github/rest-api-description
  dependency-type: direct:production
...

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

Author: dependabot[bot]