Bump domain_name from 0.5.20180417 to 0.5.20190701
Bump domain_name from 0.5.20180417 to 0.5.20190701

Bumps [domain_name](https://github.com/knu/ruby-domain_name) from 0.5.20180417 to 0.5.20190701.
- [Release notes](https://github.com/knu/ruby-domain_name/releases)
- [Changelog](https://github.com/knu/ruby-domain_name/blob/master/CHANGELOG.md)
- [Commits](https://github.com/knu/ruby-domain_name/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sue445/twittodon,sue445/twittodon