[flatpak-indexer] Set imagestream to fedora:latest

For some reason flatpak indexer had fedora:latest redefined to
fedora:40. Let's correct this.

Signed-off-by: Michal Konecny <mkonecny@redhat.com>

roles/openshift-apps/flatpak-indexer/files/imagestream.yml

@@ -25,7 +25,7 @@ spec:
   - name: latest
     from:
       kind: DockerImage
-      name: registry.fedoraproject.org/fedora:40
+      name: quay.io/fedora:latest
     importPolicy:
       scheduled: true
     referencePolicy: