Bump container registry to v3.46.0

What does this MR do?

3.46.0 (2022-06-03)

Bug Fixes

• allow buildkit indexes without layers (6d2c356)
• do not track skipped manifests during pre-imports (dfde6ff)

Features

• add support for additional gardener media types (7626dd7)
• add support for additional misc media types (13c34ce)
• add support for additional misc media types (1ea61f6)

Related issues

Related to gitlab-org/container-registry#704 (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