Merge branch 'dcouture-camo-http-slashless' into 'master'

Proxy asset URLs with protocol but no slashes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/135146



Merged-by: Douglas Barbosa Alexandre <dbalexandre@gmail.com>
Approved-by: Kasia Misirli <kmisirli@gitlab.com>
Approved-by: Douglas Barbosa Alexandre <dbalexandre@gmail.com>
Co-authored-by: Dominic Couture <dcouture@gitlab.com>