Bump chef from 15.8.23 to 15.9.17
Bump chef from 15.8.23 to 15.9.17

Bumps [chef](https://github.com/chef/chef) from 15.8.23 to 15.9.17.
- [Release notes](https://github.com/chef/chef/releases)
- [Changelog](https://github.com/chef/chef/blob/v15.9.17/CHANGELOG.md)
- [Commits](https://github.com/chef/chef/compare/v15.8.23...v15.9.17)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
uzyexe/chef-dev