Merge branch 'DeprecateBAS' into 'master'

Deprecate Breach and Attack Simulation

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144056



Merged-by: Russell Dickenson <rdickenson@gitlab.com>
Approved-by: Cameron Swords <cswords@gitlab.com>
Approved-by: Russell Dickenson <rdickenson@gitlab.com>
Co-authored-by: Sara Meadzinger <smeadzinger@gitlab.com>