Add Ruby 3.2 and 3.3 platforms to Gemfile DSL

[composerinteralia]

What was the end-user or developer problem that led to this PR?

Ruby 3.2 platforms are not yet supported in the Gemfile DSL:

gem "abc", platform: :ruby_32

What is your fix for the problem, implemented in this PR?

Along the same lines as #5469, this adds support for Ruby 3.2 platforms.

Make sure the following tasks are checked

• Describe the problem / feature
• Write tests for features and bug fixes
• Write code to solve the problem
• Make sure you follow the current code style and write meaningful commit messages without tags

[composerinteralia]

Seeing #5469 (comment), I played around with a test to catch this earlier in the future, and ended up with something like this:

    it "allows platforms matching the running Ruby version" do
      platform = "ruby_#{RbConfig::CONFIG["MAJOR"]}#{RbConfig::CONFIG["MINOR"]}"
      subject.gem("foo", :platform => platform)
    end

Do you think that is worth adding? Or is there a better way of getting at that?

[deivid-rodriguez]

Nice, I like it! It should make our daily CI against ruby-head fail, and then fixed after adding :ruby_33.

[deivid-rodriguez]

Approving the current changeset since it seems good to introduce right away, but feel free to also add the extra spec on this PR if you prefer!

[composerinteralia]

Confirmed the test fails on 3.3: https://github.com/rubygems/rubygems/actions/runs/4106956899/jobs/7085847793

I'll add those platforms and then this should be ready to go. Ready when green!

[deivid-rodriguez]

Thanks a bunch!

[composerinteralia]

https://github.com/rubygems/rubygems/actions/runs/4107455290/jobs/7086969404 looks like it succeeded, but is stuck 😕

[deivid-rodriguez]

Indeed, it seems like an actions glitch?

[composerinteralia]

This time https://github.com/rubygems/rubygems/actions/runs/4112632902/jobs/7097788892 got cancelled for some reason 😢

I'll rebase to trigger this one more time 🤞🏻

[deivid-rodriguez]

Oh boy, sorry about that. Our CI has become a little bit unstable since adding Ruby 3.2 :(

[simi]

Finally 🟢 💪.