Support Latest Ruby Versions in Stack Updates


It appears that the latest Xcode 10.2 stack has Ruby versions 2.2.10, 2.3.8, 2.4.5, and 2.5.3, but it would be nice if the stacks have the newest minor versions of Ruby (2.4.6, 2.5.5, and 2.6.3)

Use case

The Xcode 10.2 image appears to use the latest version of RubyGems, which is nice because it fixes some security vulnerabilities, but our local version of Ruby is set to the latest to remove doubts about whether each developer has individually updated their RubyGems version. For reproducible builds, it’s nice to have the exact same version of Ruby on our CI service, but building a specific version of Ruby each time makes builds longer.

Thank you for the request we will check it out and update these if approved! :upside_down_face: