Ruby 3.4 support

[bschrag620]

It looks like pry-doc is supporting Ruby 3.4 on master, but there hasn't been a new version tag for it. I've opened a PR to release a new version, but definitely not clear of what else might need to be done. Happy to assist in any way that I can. Thanks!

[jeffbax]

Would also like to see a new release tag for this