feat: bump bifrost tag

Author: jackhodgkiss

etc/kayobe/kolla/globals.yml

@@ -16,7 +16,7 @@ ironic_dnsmasq_tag: xena-20230214T150257
 neutron_tag: xena-20230320T143013
 prometheus_node_exporter_tag: xena-20230310T170439
 {% else %}
-bifrost_tag: xena-20230215T195824
+bifrost_tag: xena-20230921T135513
 blazar_tag: xena-20230315T122918
 caso_tag: xena-20230315T122918
 ironic_tag: xena-20230317T090705