WIP - [CVE-2017-8418] Bumping rubocop to resolve

[mbbroberg]

Pull Request Checklist

Is this in reference to an existing issue?

General

• Update Changelog following the conventions laid out here

• Update README with any necessary configuration snippets

• Binstubs are created if needed

• RuboCop passes

• Existing tests pass

New Plugins

• Tests

• Add the plugin to the README

• Does it have a complete header as outlined here

Purpose

Known Compatibility Issues

[majormoses]

@mbbroberg are you planning on doing anything with this or should we close this out?

[mbbroberg]

I'd like to get to it, but if you get here first I won't be offended 😄

[majormoses]

I'd like to get to it, but if you get here first I won't be offended

There are something like 180 left so I will assume you are gonna get to it before I do unless I force the issue at work. It's in my backlog but not something I have been able to bring up priority wise, too many larger projects in flight.

[majormoses]

closing in favor of #59