[citemplates] flatpak: Use the buildstream image for flat-mngr jobs

[Jordan Petridis <jpetridis src gnome org>]

commit 90b9036088711a091f7d263a7c8f8f4c4b97f453
Author: Jordan Petridis <jordan centricular com>
Date:   Mon Aug 1 16:48:08 2022 +0300

    flatpak: Use the buildstream image for flat-mngr jobs
    
    This is what gnome-build-meta uses as well, and would allow us
    to drop our custom flat-manager image.
    
    https://gitlab.gnome.org/GNOME/gnome-runtime-images/-/merge_requests/41

 flatpak/flatpak_ci_initiative.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flatpak/flatpak_ci_initiative.yml b/flatpak/flatpak_ci_initiative.yml
index 9d096ae..8844cfb 100644
--- a/flatpak/flatpak_ci_initiative.yml
+++ b/flatpak/flatpak_ci_initiative.yml
@@ -60,7 +60,7 @@
     - flatpak-aarch64
 
 .publish_nightly:
-  image: 'quay.io/gnome_infrastructure/gnome-runtime-images:flat-manager-client'
+  image: 
'registry.gitlab.com/freedesktop-sdk/infrastructure/freedesktop-sdk-docker-images:543571583e6271ede4c706aff60d389cf26a13e9'
   stage: 'deploy'
   timeout: '100m'
   script: