[pitivi/barthalion/gnome-runtime-images-quay] Update (or drop) the Docker image used by Flatpak job

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 930d81a4f21cb0b1b78ca88b33f267b8b2d86e3c
Author: Bartłomiej Piotrowski <b bpiotrowski pl>
Date:   Wed Jul 27 12:51:34 2022 +0200

    Update (or drop) the Docker image used by Flatpak job
    
    The gnome-runtime-images have been recently migrated to Quay. This is already reflected in the template.
    
    Please note this MR has been created semi-automatically. If it doesn't make sense, feel free to close it.

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 273dab3ab..a6b073812 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,7 +27,7 @@ pitivi:master:
     # https://stackoverflow.com/questions/2264428/converting-string-to-lower-case-in-bash#2264537
     - export NAMESPACE="$(echo "${CI_PROJECT_NAMESPACE}" | tr A-Z a-z)"
     - export IMAGE="${CI_REGISTRY}/${NAMESPACE}/${CI_PROJECT_NAME}:master-sdk_${GNOME_SDK}"
-    - export BASE_IMAGE="registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:${GNOME_SDK}"
+    - export BASE_IMAGE="quay.io/gnome_infrastructure/gnome-runtime-images:gnome--${GNOME_SDK}"
 
     # Commands to be run in the Docker image.
     # Clone the Pitivi repo.