Bump vendor/emojis from `2c4a991` to `c660b3a`
Bump vendor/emojis from `2c4a991` to `c660b3a`

Bumps [vendor/emojis](https://github.com/buildkite/emojis) from `2c4a991` to `c660b3a`.
- [Release notes](https://github.com/buildkite/emojis/releases)
- [Commits](https://github.com/buildkite/emojis/compare/2c4a991af49f3d9b98b17e76aec9b9bc83f4e0e5...c660b3a6ae483c1367cf0259e951991bff4ca839)

---
updated-dependencies:
- dependency-name: vendor/emojis
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
buildkite/docs,buildkite/docs,buildkite/docs,buildkite/docs