Update to use Omnibus Builder 3.2.0

What does this MR do?

Update to use Omnibus Builder 3.2.0

- New version of Omnibus Builder images tagged for 3.2.0
- Use Ruby 2.7.5
- Upgraded ruby_docker to use Debian/Bullseye
- Add AlmaLinux builders
- Add `skopeo` to `ruby_docker` image
- Bump NodeJS to 16.14.2
- Bump yarn to 1.22.18

Changelog: other

Signed-off-by: Robert Marshall <rmarshall@gitlab.com>

Related issues

Checklist

See Definition of done.

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Required

• Merge Request Title, and Description are up to date, accurate, and descriptive
• MR targeting the appropriate branch
• MR has a green pipeline on GitLab.com
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Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes
• Documentation created/updated
• Tests added
• Integration tests added to GitLab QA
• Equivalent MR/issue for the GitLab Chart opened