Remove pry-byebug depedency

[mvz]

Summary

Remove pry-byebug and byebug.

Details

This removes the hard development dependencies on byebug and pry-byebug. This will allow intalling the latest version of pry. If pry-byebug is needed, it can still be added in Gemfile.local. The pry dependency is set to be lenient enough to allow installing a version compatible with pry-byebug.

Motivation and Context

This keeps dependencies up-to-date. I find I don't use byebug so dropping it from the default set shouldn't be problematic. Once support for Ruby 2.5 has been dropped, the new debug gem can be added as a permanent dependency to provide extended debugging features by default.

How Has This Been Tested?

CI

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Internal change (refactoring, test improvements, developer experience or update of dependencies)

Checklist:

• I've added tests for my code
• My change requires a change to the documentation.
• I have updated the documentation accordingly.