[gtk/ci-image-4-2] ci: Stop using a separate docs image

[Matthias Clasen <matthiasc src gnome org>]

commit 939a254e28aaf5226dde027adcda211a918cfaa0
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu May 20 21:39:13 2021 -0400

    ci: Stop using a separate docs image
    
    No longer needed with gi-docgen.

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a41fae5b7f..1a4f3c516f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,9 +24,9 @@ variables:
   BACKEND_FLAGS: "-Dx11-backend=true -Dwayland-backend=true -Dbroadway-backend=true"
   FEATURE_FLAGS: "-Dvulkan=enabled -Dcloudproviders=enabled"
   MESON_TEST_TIMEOUT_MULTIPLIER: 3
-  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v28"
+  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v31"
   FLATPAK_IMAGE: "registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master"
-  DOCS_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora-docs:v27"
+  DOCS_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v31"
 
 .only-default:
   only: