Update danger requirement from ~> 4.3 to ~> 5.11
Update danger requirement from ~> 4.3 to ~> 5.11

Updates the requirements on [danger](https://github.com/danger/danger) to permit the latest version.
- [Release notes](https://github.com/danger/danger/releases)
- [Changelog](https://github.com/danger/danger/blob/master/CHANGELOG.md)
- [Commits](https://github.com/danger/danger/commits/v5.11.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
mattbrictson/chandler,mattbrictson/chandler