Merge branch 'id-refactor-find-certificate-logic-into-a-service' into 'master'

Refactor find certificate logic into a service

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/140063



Merged-by: Dylan Griffith <dyl.griffith@gmail.com>
Approved-by: Abhilash Kotte <akotte@gitlab.com>
Approved-by: Dylan Griffith <dyl.griffith@gmail.com>
Reviewed-by: Igor Drozdov <idrozdov@gitlab.com>
Co-authored-by: Igor Drozdov <idrozdov@gitlab.com>