Bump Container Registry to v3.7.0-gitlab

What does this MR do?

3.7.0 (2021-08-06)

Bug Fixes

• auth/token: fix migration eligibility validation for read requests (6576897)
• handlers: handle Buildkit index as an OCI manifest when using the database (556ab04)
• use MR diff SHA in commitlint job (f66bccb)
• handlers: default to the schema 2 parser instead of schema 1 for manifest uploads (0c62ea4)
• handlers: display error details when invalid media types are detected during a manifest push (f750297)
• handlers: fallback to OCI media type for manifests with no payload media type (854f3ad)
• handlers: migration_path label should be logged as string (524a614)
• handlers: return 400 Bad Request when saving a manifest with unknown media types on the DB (0a39980)
• storage/driver/azure: give deeply nested errors more context (3388e1d)

Features

• storage: instrument blob download size and redirect option (f091ff9)

Performance Improvements

• storage: do not descend into hashstates directors during upload purge (b46d563)

Related issues

container-registry#431 (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
• Pipeline is green on dev.gitlab.org if the change is touching anything besides documentation or internal cookbooks
• trigger-package has a green pipeline running against latest commit

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