Apply fixes or suppress warnings for issues spotted by recent rubocop versions.

[faisal]

Handled more recent rubocop's warnings:

• Add blank lines to test cases
• Rename some predicate methods to the ? form in several places
• Change string interpolation style in lib/rubycritic/rake_task.rb
• Suppress remaining warnings

Check list:

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

[faisal]

@etagwerker @nunosilva800 what do you think of:

1. Landing this and monkeypatch cucumber-core to handle Ruby 3.5 method signatures #518 to get back to green on non-jruby things that should pass
2. Landing Bump aruba, byebug, cucumber, fakefs, rake, reek dependencies #524 to bring dependencies up to current gems
3. Landing some version (TBD) of show green check mark even if ruby-head fails  #508 + Split experimental steps #517 to keep JRuby test failures from blocking merges.
4. Landing Remove support for Ruby 3.1 and aligned JRuby 9.4 #514 to finally drop support for the EOL'd Ruby 3.1 and JRuby 9.x.

and then, when there's a new Cucumber that fixes the underlying issue:

5. Reverting monkeypatch cucumber-core to handle Ruby 3.5 method signatures #518 so we aren't hacking around some other Gem's bugs.

Seperately we'll need to address #513, and I have some clues but haven't dug in fully.