Merge branch...

Merge branch '422163-pg_dump-failing-on-gitlab-instances-with-multiple-pg-read-replicas' into 'master' 

Use the backup database connection while restoring timeouts

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143141



Merged-by: Michael Kozono <mkozono@gitlab.com>
Approved-by: Javiera Tapia <jtapia@gitlab.com>
Approved-by: Michael Kozono <mkozono@gitlab.com>
Reviewed-by: Michael Kozono <mkozono@gitlab.com>
Reviewed-by: Javiera Tapia <jtapia@gitlab.com>
Co-authored-by: Douglas Barbosa Alexandre <dbalexandre@gmail.com>