Merge branch 'dblessing_group_saml_extern_uid_audit' into 'master'

Audit Group SAML extern_uid changes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/104791



Merged-by: Terri Chu <tchu@gitlab.com>
Approved-by: Jessie Young <jessieyoung@gitlab.com>
Approved-by: Terri Chu <tchu@gitlab.com>
Co-authored-by: Drew Blessing <drew@gitlab.com>