Merge branch 'doc-revert-deprecation-notice-for-securityreportfindings' into 'master'

Revert deprecation for securityReportFindings

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/151400



Merged-by: Russell Dickenson <rdickenson@gitlab.com>
Approved-by: Russell Dickenson <rdickenson@gitlab.com>
Co-authored-by: Samantha Ming <sming@gitlab.com>