Bump cowboy from 2.8.0 to 2.9.0 (#600)
Bump cowboy from 2.8.0 to 2.9.0 (#600)

Bumps [cowboy](https://github.com/ninenines/cowboy) from 2.8.0 to 2.9.0.
- [Release notes](https://github.com/ninenines/cowboy/releases)
- [Commits](https://github.com/ninenines/cowboy/compare/2.8.0...2.9.0)

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

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
swoosh/swoosh