Update unicode-display_width dependency

[KieranP]

Describe the change

Support using v3 of unicode-display_width

Why are we doing this?

Inline with rubocop requirements, so that we're not forcing users to downgrade

Benefits

Allow users of tty-progressbar to use latest gem versions

Drawbacks

None known

Requirements

• Tests written & passing locally?
• Code style checked?
• Rebased with master branch?
• Documentation updated?
• Changelog updated?

[piotrmurach]

Thank you for this PR!

I'm all for relaxing the constraints on the unicode-display_width gem to allow for newer versions.

In a strict sense, the current constraints don't require any downgrade action on the user unless they are intent on using the very lastest unicode-display_width gem version. Usually, this is a transitory dependency, and most users probably don't use it directly.

I'd also appreciate a change note in the changelog. This can be under ## unreleased and ### Changed headings.

[KieranP]

In a strict sense, the current constraints don't require any downgrade action on the user unless they are intent on using the very lastest unicode-display_width gem version. Usually, this is a transitory dependency, and most users probably don't use it directly.

True, however as a maintainer of an app that handles PII, it's always best to have all dependencies be on the latest version with security/bug fixes. Requiring a downgrade for a dependency in order to install latest versions of something we need is not an ideal compromise.

I'd also appreciate a change note in the changelog. This can be under ## unreleased and ### Changed headings.

Done

[piotrmurach]

Nice one! The changelog entry needs some editing.