core-deps-latest: Build GstGL support for Wayland and X11

in gst-plugins-base, so that the GTK GL sink can be built in
gst-plugins-good.

Ideally, each one of the backends we want to build would be accumulated,
but meson doesn't have a way to pass "-Doption=foo,bar" as two separate
arguments (each -Doption argument overrides the previous one).
2 jobs for wip/hadess/gst-plugins-base-gl in 13 minutes and 47 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Test
passed test-py3 #1276738

00:03:38

passed ub20.04-py3-glib #1276739

00:13:47