[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:

  672a09b... coverage: Build gidl-bindings
  7020e0f... ci: Add .gitlab-ci.yml
  b6543b4... ci: Add ubuntu:16.04 run with gcc
  d46551d... ci: Add ubuntu:18.04 run with gcc
  ecbb59a... ci: Add fedora:latest run with clang
  99fb151... ci: Add archlinux/base:latest run with gcc
  9a1236a... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  e6be357... ci: Always deploy

Commits added to the branch:

  4591fa5... codegen: Don't pass CCodeCastExpression to NULL-aware free  (*)
  91a9d42... gtk4: Update to 3.98.2+11495027 (*)
  2209a67... gstreamer: Update from 1.17.0+ git master (*)
  a48d0ca... gio-2.0: Update to 2.65.0~a136776e (*)
  45675a2... gobject-2.0: Add ParamSpec/Signal.is_valid_name() since 2.6 (*)
  d6e7eba... Sync NEWS from 0.48 (*)
  624d838... tests: Add "Bus/DBusConnection.get_proxy*()" tests to incre (*)
  e8497c8... coverage: Build gidl-bindings
  92407db... ci: Add .gitlab-ci.yml
  e0cf952... ci: Add ubuntu:16.04 run with gcc
  4dd15e2... ci: Add ubuntu:18.04 run with gcc
  c3f0f5d... ci: Add fedora:latest run with clang
  0bc7c94... ci: Add archlinux/base:latest run with gcc
  89df55e... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  c86efd8... ci: Always deploy

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