[grilo-plugins] ci: use stable fedora to fix ci

[Victor Toso <victortoso src gnome org>]

commit f84e9a27daabd5c7a9ab2e8390085f84fbaf675c
Author: Victor Toso <victortoso redhat com>
Date:   Fri Aug 21 09:04:21 2020 +0200

    ci: use stable fedora to fix ci
    
    Rawhide is breaking the introspecting build with a permission to read
    error.
    
        ldd: error: you do not have read permission for 
`/builds/victortoso/grilo-plugins/_build/tmp-introspectv0kuw8ww/Grl-0.3'
    
    That is a temporary folder created by meson (0.55.0-2) but I think the
    issue is in the new python 3.9. I could not reproduce locally but for
    now, let's fix CI for grilo and grilo-plugins (due subprojects)

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 318d0751..dafcc5e9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: fedora:rawhide
+image: fedora:latest
 
 variables:
   DEPENDENCIES_GRILO: gobject-introspection-devel libxml2-devel