[pkg-go] Bug#933837: mmark: upgrade to version 2

[Reto Kromer]

Dawid Dziurla wrote:

>I think there is currently no way for it to be updated, as hugo
>depends on this specific version and hugo is in fact the only
>package that depends on golang-github-miekg-mmark right now.
>
>One way to workaround this would be to submit a PR to upstream
>hugo updating their dependency on this package.

On my end, I have installed the current mmark via Linuxbrew. My
intent here was to help other Debian users to get the version
which is now preferred by IETF.

I have opened an issue:

  https://github.com/gohugoio/hugo/issues/6163

but the have... 343 open issues and 32 open PR!