[gtk/gtk-doc-ci: 2/3] ci: Update the version of Meson in the CI image

[Emmanuele Bassi <ebassi src gnome org>]

commit 98e6e0cf7730d4fd668e6f41d6dd9172396edb07
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Jan 28 16:52:42 2020 +0100

    ci: Update the version of Meson in the CI image
    
    We need at least 0.52.1 to be able to use gtk-doc as a sub-project.

 .gitlab-ci/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci/Dockerfile b/.gitlab-ci/Dockerfile
index a86bb1e3ce..d8cabe1a9d 100644
--- a/.gitlab-ci/Dockerfile
+++ b/.gitlab-ci/Dockerfile
@@ -76,7 +76,7 @@ RUN dnf -y install \
     xorg-x11-server-Xvfb \
  && dnf clean all
 
-RUN pip3 install meson==0.50.1
+RUN pip3 install meson==0.52.1
 
 ARG HOST_USER_ID=5555
 ENV HOST_USER_ID ${HOST_USER_ID}