Merge branch '469439-spp-repository-access-settings' into 'master'

Add setting for projects to access SPP repository to fetch PEP configs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/164918



Merged-by: Jarka Košanová <jarka@gitlab.com>
Approved-by: Dominic Bauer <dbauer@gitlab.com>
Approved-by: Ottilia Westerlund <12746880-ottilia_westerlund@users.noreply.gitlab.com>
Approved-by: Allison Browne <abrowne@gitlab.com>
Approved-by: Sean Arnold <sarnold@gitlab.com>
Approved-by: Jarka Košanová <jarka@gitlab.com>
Reviewed-by: Sean Arnold <sarnold@gitlab.com>
Reviewed-by: Dominic Bauer <dbauer@gitlab.com>
Reviewed-by: Martin Čavoj <mcavoj@gitlab.com>
Co-authored-by: Martin Čavoj <mcavoj@gitlab.com>