build(deps): bump braze-specification from 9b6cd38 to 6cb1dd1

Bumps [braze-specification](https://github.com/braze-community/braze-specification) from `9b6cd38` to `6cb1dd1`.
- [Release notes](https://github.com/braze-community/braze-specification/releases)
- [Commits](braze-community/braze-specification@9b6cd38...6cb1dd1)

---
updated-dependencies:
- dependency-name: braze-specification
  dependency-type: direct:production
...

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