[vala] (15 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:

  305d978... coverage: Build gidl-bindings
  8d540cd... ci: Add .gitlab-ci.yml
  e17ea49... ci: Add ubuntu:16.04 run with gcc
  6513c6c... ci: Add archlinux:latest run with gcc
  68275e5... ci: Add alpine:edge run with gcc
  cc3426d... ci: Add fedora:rawhide run with clang
  65ac0dd... Fedora rawhide is broken
  eb4317c... ci: Use Fedora 34 (broken DBus)
  9c68a3a... Ubuntu devel is broken
  4ec654d... Alpine edge is broken
  fa9906c... ci: Build manual as pdf and html
  608f636... ci: Always deploy

Commits added to the branch:

  a9f620a... gtk4: Update to 4.6.0+06e5da45 (*)
  8f7dacb... vapi: Update GIR-based bindings (*)
  775187f... Release 0.55.1 (*)
  947582d... coverage: Build gidl-bindings
  5d5e022... ci: Add .gitlab-ci.yml
  ab5f848... ci: Add ubuntu:16.04 run with gcc
  4cb9a72... ci: Add archlinux:latest run with gcc
  e021f92... ci: Add alpine:edge run with gcc
  656e192... ci: Add fedora:rawhide run with clang
  51ad69b... Fedora rawhide is broken
  19e1188... ci: Use Fedora 34 (broken DBus)
  1614113... Ubuntu devel is broken
  362b216... Alpine edge is broken
  eeef030... ci: Build manual as pdf and html
  22e6fce... ci: Always deploy

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