Update GitLab's codeclimate to 0.85.6

What does this MR do?

Updates registry.gitlab.com/gitlab-org/security-products/codequality image to 0.85.6 in both GitLab Auto DevOps template and CI for this GitLab repo.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines

Ref.

• Previous update on GitLab Auto DevOps template (12-5-stable): !20046 (merged)
• Previous update on CI for GitLab itself (0.85.5): !19354 (merged)