Bump ruby-prof from 0.16.2 to 0.17.0
Bump ruby-prof from 0.16.2 to 0.17.0

Bumps [ruby-prof](https://github.com/ruby-prof/ruby-prof) from 0.16.2 to 0.17.0.
- [Changelog](https://github.com/ruby-prof/ruby-prof/blob/master/CHANGES)
- [Commits](https://github.com/ruby-prof/ruby-prof/compare/v0.16.2...v0.17.0)
alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall