[gegl] gi: add gobject-introspection prereq

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 1f4435a65056ad1cc4f7b7c366b2e0b672d246ba
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Aug 8 14:06:51 2019 +0200

    gi: add gobject-introspection prereq

 .gitlab-ci.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 983491d76..27d6496a1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,7 +20,7 @@ image: archlinux/base:latest
   variables:
     GIT_DEPTH: "5"
   before_script:
-    - pacman -Syu --noconfirm --needed --cachedir `pwd`/_pacman_cache git base-devel meson lcms2
+    - pacman -Syu --noconfirm --needed --cachedir `pwd`/_pacman_cache git base-devel meson lcms2 
gobject-introspection
     - git clone --depth=$GIT_DEPTH https://gitlab.gnome.org/GNOME/babl.git _babl
     - cd _babl
     - mkdir _build
@@ -52,6 +52,7 @@ babl-min-meson:
     - pacman -Syu --noconfirm --needed --cachedir `pwd`/_pacman_cache
         base-devel
         ffmpeg
+        gobject-introspection
         graphviz
         jasper
         json-glib