Show current versions in the sidebar

[djfpaagman]

I semi-often look up the latest Ruby version (for example: when setting or updating the version in .ruby-version).

I always get confused and can't find it immediately, needing to scan the news headlines (currently the release post for 3.3.5 is on top, but that's not always the case, or I could, for example, want the latest 3.2.x release), or need to head to the downloads page.

I feel this is a bit of the "when I go to a restaurant's website, I want to see the opening hours and the menu" which is often also not the case. For me I want to see the latest Ruby versions when I visit the Ruby website.

I want to propose to add a block on top of the sidebar, here's something I quickly threw together in web inspector:

I'm happy to create a PR with something like this, any feedback is welcome!