Update BYOD for Dedicated around Let's Encrypt certificates

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/170321



Merged-by: Lysanne Pinto <lpinto@gitlab.com>
Approved-by: Stephan Breitrainer <sbreitrainer@gitlab.com>
Approved-by: Lysanne Pinto <lpinto@gitlab.com>
Reviewed-by: Oriol Lluch <olluch@gitlab.com>
Reviewed-by: Lysanne Pinto <lpinto@gitlab.com>
Co-authored-by: Emily Sahlani <esahlani@gitlab.com>