Merge branch 'mc_rocha_enable_scan_execution_pipeline_concurrency_control' into 'master'

Enable scan_execution_pipeline_concurrency_control ff

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/176469



Merged-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Approved-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Co-authored-by: mc_rocha <mrocha@gitlab.com>