build(deps): bump braze-specification from 946ecaf to bef2c7b

Bumps [braze-specification](https://github.com/braze-community/braze-specification) from `946ecaf` to `bef2c7b`.
- [Release notes](https://github.com/braze-community/braze-specification/releases)
- [Commits](braze-community/braze-specification@946ecaf...bef2c7b)

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

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