[libsoup/wip/ci] Add missing libpsl-devel dependency

[Claudio Saavedra <csaavedra src gnome org>]

commit f308c5236f341b48ac12a8c91738d0712d81b63e
Author: Claudio Saavedra <csaavedra igalia com>
Date:   Fri Aug 10 14:19:36 2018 +0000

    Add missing libpsl-devel dependency

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 47390460..25e737f1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 image: fedora:28
 
 variables:
-  ADDITIONAL_DEPENDENCIES: which gtk-doc
+  ADDITIONAL_DEPENDENCIES: which gtk-doc libpsl-devel
 
 build_stable:
   before_script: