feat: update the keystone image (#666)

The keystone image is now coming from the keystone-rxt image package
which is built within the keystone-rxt repo.

The old job for keystone has been removed.

Signed-off-by: Kevin Carter <[email protected]>

Author: cloudnull

Diff for: .github/workflows/release-keystone-rxt.yml

@@ -3,7 +3,7 @@
   "docker.io/openstackhelm/magnum:2024.1-ubuntu_jammy",
   "ghcr.io/rackerlabs/genestack/octavia-ovn:master-ubuntu_jammy-1733266356",
   "docker.io/openstackhelm/glance:2024.1-ubuntu_jammy",
-  "ghcr.io/rackerlabs/genestack/keystone-rxt:2024.1-ubuntu_jammy-1735886895",
+  "ghcr.io/rackerlabs/keystone-rxt:2024.1-ubuntu_jammy-1737483453",
   "docker.io/openstackhelm/barbican:2023.1-ubuntu_jammy",
   "ghcr.io/rackerlabs/genestack/nova-efi:2024.1-ubuntu_jammy-1723129048",
   "docker.io/openstackhelm/ceph-config-helper:latest-ubuntu_jammy",