Update pipeline-common ref to 8.18.4

Updates pipeline-common ref from 8.18.3 to 8.18.4

Changelog

8.18.4 (2024-07-03)

changed (2 changes)

• Bump allure-report-publisher to 4.0.2 (merge request)
• Update gitlab-qa version to 14.11.0 (merge request)

Commits

https://gitlab.com/gitlab-org/quality/pipeline-common/-/compare/8.18.3...8.18.4

Merge request should be good to merge as long as pipeline for this update passes.

cc: @gl-quality/tp-sub-dept