Add Ruby 3.2 version of www-gitlab-com Docker image

What does this MR do and why?

Add new www-gitlab-com Docker image based on Ruby 3.2 and Node.js 18.14.1.

Also update Node.js minor version of existing Ruby 3.0-based image.

Particularly to allow gitlab-docs project to consume a www-gitlab-com Docker image based on Ruby 3.2.1 (see gitlab-docs!3519 (merged)), but also to help other projects that use these images to eventually migrate to Ruby 3.2.

• Build job of update to existing image: https://gitlab.com/gitlab-org/gitlab-build-images/-/jobs/3851572613.
• Build job of new image: https://gitlab.com/gitlab-org/gitlab-build-images/-/jobs/3851572614.

Checklist

• (If applicable) Add patches if required for upgrading Ruby version in https://gitlab.com/gitlab-org/gitlab-build-images/-/tree/master/patches/ruby.