Merge branch 'jocelynjane-master-patch-380b' into 'master'

Updated use cases for secrets manager blueprint

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/155668



Merged-by: Scott Hampton <shampton@gitlab.com>
Approved-by: Scott Hampton <shampton@gitlab.com>
Reviewed-by: Fabio Pitino <fpitino@gitlab.com>
Reviewed-by: Erick Bajao <fbajao@gitlab.com>
Co-authored-by: Jocelyn Eillis <jeillis@gitlab.com>