Installing Ruby: Update ruby version to latest stable release

[nbarnabee]

Because

The version cited in the lesson (3.4.2) is outdated, and no longer appears as an option when using the rbenv install --list command, which may cause confusion.

This PR

• Updates the Ruby version number from 3.4.2 to 3.4.3

Issue

Additional Information

Pull Request Requirements

• [x] I have thoroughly read and understand The Odin Project curriculum contributing guide
• [x] The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• [x] The Because section summarizes the reason for this PR
• [x] The This PR section has a bullet point list describing the changes in this PR
• [x] If this PR addresses an open issue, it is linked in the Issue section
• [x] If any lesson files are included in this PR, they have been previewed with the Markdown preview tool to ensure it is formatted correctly
• [x] If any lesson files are included in this PR, they follow the Layout Style Guide

[nbarnabee]

I'm happy to take that on, thanks.

[JoshDevHub]

@nbarnabee Awesome! Feel free to submit PRs for each of those repos, and then make a comment here that links those PRs.

If you need any additional guidance on how to do that, don't hesitate to ask questions. I'll gladly offer any support you need.

[mao-sz]

@nbarnabee are you still wanting to work on the additional PRs? This PR is blocked until the others are ready and approved, so all can be merged together.

[mao-sz]

@JoshDevHub author inactivity but also the web app's been bumped to 3.4.5 since, and 3.4.6 has already been released. Worth closing this and bumping the curriculum etc. to 3.4.5? Or just wait until/if the web app moves to 3.4.6 to update the curriculum?

[JoshDevHub]

@JoshDevHub author inactivity but also the web app's been bumped to 3.4.5 since, and 3.4.6 has already been released. Worth closing this and bumping the curriculum etc. to 3.4.5? Or just wait until/if the web app moves to 3.4.6 to update the curriculum?

Thanks for bumping this.

I think we can just go ahead and bump to 3.4.6, and I'll bump the web app there as well (I don't anticipate any problems with a patch bump).

I'll probably handle it as this gives me an excuse to finally flesh out the documentation on handling version bumps to Ruby in the curriculum.

Closing this PR as it's gone stale/out-of-date.