Update local version of Ruby to 3.0.5

What does this MR do?

From discussion at: gitlab-development-kit!2834 (comment 1187246113), use Ruby 3.0.5 instead.

TODO

• Feature flag
  • Added feature flag:
  • This feature does not require a feature flag
• I added the Changelog trailer to the commits that need to be included in the changelog (e.g. Changelog: added)
• I added unit tests or they are not required
• I added acceptance tests or they are not required
• I added documentation (or it's not required)
• I followed code review guidelines
• I followed Go Style guidelines