Bump Container Registry to v3.39.3-gitlab

What does this MR do?

3.39.3 (2022-05-02)

Bug Fixes

• datastore: do not attempt to import non-distributable layers (7449428)
• datastore: gracefully handle manifest broken link during imports (32bc992)
• datastore: gracefully handle tags deleted between list and import (1c1a6d6)
• datastore: gracefully handle tags with broken links during imports (2b53c0d)
• datastore: race condition pushing two or more manifests by tag with the same digest (54accd5)
• handlers: clarify log message when registry is at max concurrent imports (aa3825c)

Related issues

gitlab-org/container-registry#665 (closed)

Checklist

See Definition of done.

For anything in this list which will not be completed, please provide a reason in the MR discussion

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

Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes
• Documentation created/updated
• Integration tests added to GitLab QA
• The impact any change in container size has should be evaluated