[DRE-maint] Bug#940814: gitlab: fails to install due to wrong ruby-asciidoctor version

[Pirate Praveen]

On Fri, 20 Sep 2019 15:29:34 +0530 Pirate Praveen
<praveen at onenetbeyond.org> wrote:
> Though we will not be updating the unstable version as we can't
> meaningfully support that version (this will require backporting so many
> security issues ourseleves, upstream supports a release only for 3 months).

And re-uploading the version in experimental is blocked by 4 transitions
(libgit2, grpc, protobuf and node-core-js). Any help in those
transitions is welcome.