[fractal] ci: make the dependency of nightly push explicit

[Jordan Petridis <jpetridis src gnome org>]

commit a28d0cdf34fa788d3b72847cf41d9784de5f85de
Author: Jordan Petridis <jpetridis gnome org>
Date:   Mon Aug 3 21:41:23 2020 +0000

    ci: make the dependency of nightly push explicit

 .gitlab-ci.yml | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cb155aef..15142cbb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -41,6 +41,8 @@ flatpak:
 
 nightly:
   extends: '.publish_nightly'
+  dependencies: ['flatpak']
+  needs: ['flatpak']
 
 pages:
     image: "$FLATPAK_IMAGE"