Merge branch 'workhorse-channel-cert-pool' into 'master'

Load the system cert pool when dialing websocket channels in workhorse

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/80374



Merged-by: Igor Drozdov <idrozdov@gitlab.com>
Approved-by: Igor Drozdov <idrozdov@gitlab.com>
Reviewed-by: Steve Xuereb <sxuereb@gitlab.com>
Reviewed-by: Jacob Vosmaer <jacob@gitlab.com>
Reviewed-by: Ash McKenzie <amckenzie@gitlab.com>
Co-authored-by: Ash McKenzie <amckenzie@gitlab.com>
Co-authored-by: Justin Lewis Salmon <justin.lewis.salmon@gmail.com>
Co-authored-by: justin.salmon <justin.salmon@blowfishstudios.com>