Bump Container Registry to v3.71.0-gitlab

What does this MR do?

3.71.0 (2023-04-14)

Features

• add support for Flux media types (bf844d6)
• api/gitlab/v1: update rename endpoint to use redis (2a6f01a)
• notifications: add endpoint name label to Prometheus metrics (6fe8cc2)

Related issues

Related to Release Version v3.71.0-gitlab (gitlab-org/container-registry#987 - 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
• When ready for review, MR is labeled "~workflow::ready for review" per the Distribution MR workflow

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 omnibus-gitlab opened
• Validate potential values for new configuration settings. Formats such as integer 10, duration 10s, URI scheme://user:passwd@host:port may require quotation or other special handling when rendered in a template and written to a configuration file.