[freezer] Transition Yoga to Unmaintained

With the new TC resolution the community replaces Extended Maintenance
with Unmaintained status [1].

So this patch transitions stable/yoga branch to Unmaintained as follows:
- tip of the stable/yoga branch is tagged with yoga-eom tag
- unmaintained/yoga branch will be cut from yoga-eom tag
- stable/yoga branch will be deleted

Some further notes:
- there will no longer be official releases off of yoga branch
- backports can be pushed against unmaintained/yoga branch
- openstack-unmaintained-core and <project>-unmaintained-core groups
  will have the rights to merge patches

For further details please read the resolution [1] & review and +1 this
patch if this is correct as soon as possible.

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

Change-Id: I5830d3954c1d58c87799f2b0e87a6265558524d4

deliverables/yoga/freezer-web-ui.yaml

@@ -16,6 +16,12 @@ releases:
       - repo: openstack/freezer-web-ui
         hash: ed5462edace65a69667e1f2f42cce343cc5bbeea
     diff-start: 11.0.0
+  - version: yoga-eom
+    projects:
+      - repo: openstack/freezer-web-ui
+        hash: 985cce10511687e1f58625be3755f4164ae17605
 branches:
   - name: stable/yoga
     location: 12.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom

deliverables/yoga/freezer.yaml

@@ -25,7 +25,17 @@ releases:
       - repo: openstack/freezer-dr
         hash: b8e9db6060121d861447ff81e83b3be95f41172a
     diff-start: 11.0.0
+  - version: yoga-eom
+    projects:
+      - repo: openstack/freezer
+        hash: 14b1db6780d44ebb2c38f27983aab028fbd7372a
+      - repo: openstack/freezer-api
+        hash: fbb4a5aba080e5ebd57d0a3cedc40027b2ac34de
+      - repo: openstack/freezer-dr
+        hash: 27aff441dda733e5588877021d92f3430240e061
 branches:
   - name: stable/yoga
     location: 12.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom
 release-notes: https://docs.openstack.org/releasenotes/freezer/yoga.html

deliverables/yoga/python-freezerclient.yaml

@@ -11,6 +11,12 @@ releases:
     projects:
       - repo: openstack/python-freezerclient
         hash: 7431d7b62cb75801175a337e41e9c8255786793a
+  - version: yoga-eom
+    projects:
+      - repo: openstack/python-freezerclient
+        hash: 35ccd6cc79838cd0c3c04604db45b073cd12eca4
 branches:
   - name: stable/yoga
     location: 4.4.0
+  - name: unmaintained/yoga
+    location: yoga-eom