Merge branch 'ph/512262/fixDuoCodeReviewBotInternalUser' into 'master'

Removed duo_code_review_bot from non-internal users

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/177269



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Patrick Bajao <ebajao@gitlab.com>
Approved-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>
Approved-by: Jon Jenkins <jjenkins@gitlab.com>