Update pipeline-common to 7.2.1

What does this MR do and why?

This brings https://gitlab.com/gitlab-org/quality/pipeline-common/-/releases/7.2.1, which solves gitlab-org/ruby/gems/gitlab_quality-test_tooling#12 (comment 1415891998).

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Fixes gitlab-org/ruby/gems/gitlab_quality-test_tooling#12 (comment 1415891998).