[designate-tempest-plugin] Tag ussuri-last & victoria-last

Ussuri and Victoria branches are in Extended Maintenance[1].
Once any stable branch is moved to EM state then, Tempest and
its plugins needs to be released[2] so that we have the compatible
tags to test the EM stable branches].

We taged ussuri-last & victoria-last for tempest[3] but forgot to do
it for the tempest plugins. Using the last hash which was tested with
ussuri and victoria jobs and can be considered as tested and compatible
tag for tempest ussuri-last and victoria-last
- https://review.opendev.org/c/openstack/designate-tempest-plugin/+/839447

[1] https://docs.openstack.org/tempest/latest/stable_branch_support_policy.html
[2] https://docs.openstack.org/tempest/latest/tempest_and_plugins_compatible_version_policy.html
[3] https://review.opendev.org/c/openstack/releases/+/843039

Change-Id: Icee710a60ced96093a7776ede176ccbafe1eae3f

deliverables/ussuri/designate-tempest-plugin.yaml

@@ -12,3 +12,7 @@ releases:
     projects:
       - repo: openstack/designate-tempest-plugin
         hash: cc1e4ad8a4226248ef43a796fa745d9225e740df
+  - version: ussuri-last
+    projects:
+      - repo: openstack/designate-tempest-plugin
+        hash: b83ec1ea58eb10bd26c32883d3f44fab99048dcc

deliverables/victoria/designate-tempest-plugin.yaml

@@ -13,3 +13,7 @@ releases:
     projects:
       - repo: openstack/designate-tempest-plugin
         hash: 5da3047851aae36f09e0b52f79523426fec6a104
+  - version: victoria-last
+    projects:
+      - repo: openstack/designate-tempest-plugin
+        hash: b83ec1ea58eb10bd26c32883d3f44fab99048dcc