[barbican] Transition Ussuri to End of Life

With the new resolution '2023-07-24 Unmaintained status replaces
Extended Maintenance' [1] the last 3 EM branches (Xena, Wallaby,
Victoria) will transition to Unmaintained, but older branches (Ussuri,
Train) should move to End of Life unless someone steps up as maintainer
of this branch for this project.

To signal this, please add a -1 for this patch if you or the team want
to keep this branch open for further maintenance.
If there is no response from anyone within a reasonable time frame,
then PTLs/release liaisons will be asked to confirm the EOL transition
with their +1.

[1] https://governance.openstack.org/tc/resolutions/20230724-unmaintained-branches.html

Change-Id: I7f7bdfc7964ec8408d8a337effe223a76859a277

deliverables/ussuri/barbican.yaml

@@ -23,6 +23,10 @@ releases:
     projects:
       - repo: openstack/barbican
         hash: 7cf483e205736483b4999abfe4baf6f626fff862
+  - version: ussuri-eol
+    projects:
+      - repo: openstack/barbican
+        hash: cc076f24e55c24a6fc8e57ca606130090fb6369b
 branches:
   - name: stable/ussuri
     location: 10.0.0.0rc1

deliverables/ussuri/python-barbicanclient.yaml

@@ -14,6 +14,10 @@ releases:
     projects:
       - repo: openstack/python-barbicanclient
         hash: e5fdd10f04488d6f6e252a63c57bf2be92a06c8f
+  - version: ussuri-eol
+    projects:
+      - repo: openstack/python-barbicanclient
+        hash: 21e7796bcaf8b2dfcf9b35bdd3e31c0845d54ee1
 branches:
   - name: stable/ussuri
     location: 4.10.0