Update postgresql 10.9 -> 10.11, 9.6.14 -> 9.6.16. Resolves CVE-2019-10208.

Updates postgresql from 9.6.14 to 9.6.16 and postgresql_new 10.9 and 10.11 to remediate CVE-2019-10208.

Doing this on .com master since the CVE is already public. Will backport this change 12.7, 12.6, and 12.5 on dev/omnibus-gitlab.

Related issues

• https://gitlab.com/gitlab-org/distribution/team-tasks/issues/542
• https://dev.gitlab.org/gitlab/gitlabhq/issues/2968

Developer checklist

• Link to the developer security workflow issue on dev.gitlab.org
• MR targets master, or X-Y-stable for backports
• Milestone is set for the version this MR applies to
• Title of this MR is the same as for all backports
• A CHANGELOG entry is added without a merge_request value, with type set to security
• Add a link to this MR in the links section of related issue
• Add a link to an EE MR if required
• Assign to a reviewer

Reviewer checklist

• Correct milestone is applied and the title is matching across all backports
• Assigned to @gitlab-release-tools-bot with passing CI pipelines