Release barbican RC1 for 2024.1 Caracal

This proposed a RC1 release for barbican to get any merged changes
out prior to the RC1 deadline for 2024.1 Caracal going into effect.

If the team is ready to proceed, please leave a +1 to acknowledge this
release and we will process right away. If the team is working on any
final merges, leave a -1 with some detail on the status and update the
patch with the new commit hash to use when ready.

Patches with no response will be merged by after Thursday, March 14th.

Change-Id: I7385ae6b8a3322b6e730ba908ef1020b0f5c85e8
Signed-off-by: Elod Illes <elod.illes@est.tech>

deliverables/caracal/barbican.yaml

@@ -5,3 +5,11 @@ team: barbican
 type: service
 repository-settings:
   openstack/barbican: {}
+releases:
+  - version: 18.0.0.0rc1
+    projects:
+      - repo: openstack/barbican
+        hash: b6edfda3443f80b20915e020143573b84114a252
+branches:
+  - name: stable/2024.1
+    location: 18.0.0.0rc1