CI: use wayland-ci-templates to manage the images

There shouldn't be a difference for users, but this way we do manage
all of our containers from freedesktop.org

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
3 jobs from wip/ci-templates in 17 minutes and 44 seconds (queued for 28 seconds)
Status Job ID Name Coverage
  Docker Image
passed #178684
debian-testing

00:07:02

 
  Build And Test
passed #178685
autotools-build-and-test

00:08:45

passed #178686
meson-build-and-test

00:01:55