build(deps): bump braze-specification from aafc5b0 to fc4ad02

Bumps [braze-specification](https://github.com/braze-community/braze-specification) from `aafc5b0` to `fc4ad02`.
- [Release notes](https://github.com/braze-community/braze-specification/releases)
- [Commits](braze-community/braze-specification@aafc5b0...fc4ad02)

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

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