build(deps): bump braze-specification from 27458a7 to df7ca03

Bumps [braze-specification](https://github.com/braze-community/braze-specification) from `27458a7` to `df7ca03`.
- [Release notes](https://github.com/braze-community/braze-specification/releases)
- [Commits](braze-community/braze-specification@27458a7...df7ca03)

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

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