[vala] (12 commits) Non-fast-forward update to branch wip/ci

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/ci' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  321cd1b... coverage: Build gidl-bindings
  c0b6141... ci: Add .gitlab-ci.yml
  3919823... ci: Add ubuntu:16.04 run with gcc
  0dde245... ci: Add archlinux:latest run with gcc
  c0a5593... ci: Add alpine:edge run with gcc
  3bcc589... ci: Add fedora:rawhide run with clang
  37bd7e3... Ubuntu devel is broken
  dde030a... ci: Use Fedora 34 (broken DBus)
  e36bf51... ci: Build manual as pdf and html
  4b90421... ci: Always deploy

Commits added to the branch:

  dc03028... manual: Update from wiki.gnome.org (*)
  e13e0d6... Release 0.55.2 (*)
  f412179... coverage: Build gidl-bindings
  8933c1c... ci: Add .gitlab-ci.yml
  df65d90... ci: Add ubuntu:16.04 run with gcc
  e711a2d... ci: Add archlinux:latest run with gcc
  ca1657f... ci: Add alpine:edge run with gcc
  145d4e8... ci: Add fedora:rawhide run with clang
  6389e13... Ubuntu devel is broken
  58d6f60... ci: Use Fedora 34 (broken DBus)
  2c3cc33... ci: Build manual as pdf and html
  786d85f... ci: Always deploy

(*) This commit already existed in another branch; no separate mail sent