[Bug Report] Packwerk is not compatible with Ruby 4.0.0

[exterm]

Description
packwerk validate raises on Ruby 4.0.0 as it requires benchmark which is no longer bundled with Ruby.

To Reproduce
Run packwerk validate on Ruby 4.0.0

Expected Behaviour
Same as on previous Ruby versions

Screenshots
Not a screenshot, but better

$ bin/packwerk validate
/home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/gems/4.0.0/gems/packwerk-3.2.3/lib/packwerk/formatters/progress_formatter.rb:4: warning: benchmark used to be loaded from the standard library, but is not part of the default gems since Ruby 4.0.0.
You can add benchmark to your Gemfile or gemspec to fix this error.
/home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/4.0.0/bundled_gems.rb:60:in 'Kernel.require': cannot load such file -- benchmark (LoadError)
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/4.0.0/bundled_gems.rb:60:in 'block (2 levels) in Kernel#replace_require'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/gems/4.0.0/gems/packwerk-3.2.3/lib/packwerk/formatters/progress_formatter.rb:4:in '<top (required)>'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/4.0.0/bundled_gems.rb:60:in 'Kernel.require'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/4.0.0/bundled_gems.rb:60:in 'block (2 levels) in Kernel#replace_require'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/gems/4.0.0/gems/packwerk-3.2.3/lib/packwerk/cli.rb:32:in 'Packwerk::Cli#initialize'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/gems/4.0.0/gems/sorbet-runtime-0.6.12698/lib/types/private/methods/_methods.rb:261:in 'UnboundMethod#bind_call'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/gems/4.0.0/gems/sorbet-runtime-0.6.12698/lib/types/private/methods/_methods.rb:261:in 'block in Packwerk::Cli#_on_method_added'
        from /home/philip/.asdf/installs/ruby/4.0.0/lib/ruby/gems/4.0.0/gems/packwerk-3.2.3/exe/packwerk:15:in '<top (required)>'
        from bin/packwerk:27:in 'Kernel#load'
        from bin/packwerk:27:in '<main>'

Version Information

• Packwerk: v3.2.3
• Ruby v4.0.0

[exterm]

From above

You can add benchmark to your Gemfile or gemspec to fix this error.

Should be an easy fix, I am happy to put up a PR to add it to the gemspec if anyone is interested in reviewing and approving it (there hasn't been much activity here lately)