WIP: Bump dependencies

[faisal]

Bump cucumber, minitest, parser, rake, reek, rubocop, and ruby_parser dependencies.

This is a pull request to update dependencies, intended for landing as part of an update that we put together for other reasons. I expect to update it from time to time when I notice other relevant dependency updates.

Check list:

• [X] Add an entry to the changelog
• [X] Squash all commits into a single one
• [X] Describe your PR, link issues, etc.