Merge branch 'jy-delete-unconfirmed-users-when-setting-set' into 'master'

Cron job to delete unconfirmed users after N days

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/122600



Merged-by: Dylan Griffith <dyl.griffith@gmail.com>
Approved-by: Aakriti Gupta <agupta@gitlab.com>
Approved-by: Dylan Griffith <dyl.griffith@gmail.com>
Reviewed-by: Drew Blessing <drew@gitlab.com>
Reviewed-by: Aakriti Gupta <agupta@gitlab.com>
Reviewed-by: Max Woolf <mwoolf@gitlab.com>
Reviewed-by: Bogdan Denkovych <bdenkovych@gitlab.com>
Reviewed-by: Jessie Young <jessieyoung@gitlab.com>
Co-authored-by: Jessie Young <jessieyoung@gitlab.com>