[glib/wip/hadess/update-fedora-ci: 39/41] ci: Update Fedora version to latest stable

[Philip Withnall <pwithnall src gnome org>]

commit f893ccc3ebfbf4449c54ea5a53e18587315fe599
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Apr 28 13:24:31 2020 +0200

    ci: Update Fedora version to latest stable
    
    This newer version of Fedora also includes a newer version of gtk-doc
    that should satisfy the update dependency:
    Dependency gtk-doc found: NO found '1.29' but need: '>=1.32'
    
    FIXME: See https://bodhi.fedoraproject.org/updates/FEDORA-2020-f93ef1b300

 .gitlab-ci/fedora.Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci/fedora.Dockerfile b/.gitlab-ci/fedora.Dockerfile
index 5c509fd66..69548716e 100644
--- a/.gitlab-ci/fedora.Dockerfile
+++ b/.gitlab-ci/fedora.Dockerfile
@@ -1,4 +1,4 @@
-FROM fedora:30
+FROM fedora:31
 
 RUN dnf -y update \
  && dnf -y install \