Bump sinatra-contrib from 1.4.6 to 1.4.7
Bump sinatra-contrib from 1.4.6 to 1.4.7

Bumps [sinatra-contrib](https://github.com/sinatra/sinatra) from 1.4.6 to 1.4.7.
- [Release notes](https://github.com/sinatra/sinatra/releases)
- [Changelog](https://github.com/sinatra/sinatra/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sinatra/sinatra/compare/v1.4.6...v1.4.7)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
chef/opscode-omnitruck,chef/omnitruck,chef/omnitruck,chef/opscode-omnitruck,chef/omnitruck,chef/opscode-omnitruck