[murano] 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: I8cb9c8ac6b1670be05eff5d45a5a7f4ffaf54a35

deliverables/yoga/murano-agent.yaml

@@ -15,7 +15,13 @@ releases:
       - repo: openstack/murano-agent
         hash: b873684f21e40145635e771d537dd64c522002bf
     diff-start: 8.0.0
+  - version: yoga-eom
+    projects:
+      - repo: openstack/murano-agent
+        hash: 5252c151bd928dc9f04568d2bfcf7e44a81005f1
 branches:
   - name: stable/yoga
     location: 9.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom
 release-notes: https://docs.openstack.org/releasenotes/murano-agent/yoga.html

deliverables/yoga/murano-dashboard.yaml

@@ -16,7 +16,13 @@ releases:
       - repo: openstack/murano-dashboard
         hash: ad3ddf6c20d7748f0a82f4b0ea399b94244dd1eb
     diff-start: 12.0.0
+  - version: yoga-eom
+    projects:
+      - repo: openstack/murano-dashboard
+        hash: 06c357a470198e132617e72a8a9db9e0190d50f5
 branches:
   - name: stable/yoga
     location: 13.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom
 release-notes: https://docs.openstack.org/releasenotes/murano-dashboard/yoga.html

deliverables/yoga/murano.yaml

@@ -19,7 +19,13 @@ releases:
       - repo: openstack/murano
         hash: 8f994a7d4e939713c16432374b1509bd178e70a0
     diff-start: 12.0.0
+  - version: yoga-eom
+    projects:
+      - repo: openstack/murano
+        hash: 2d28f9e2affcb2dcff0508f70257605eaacf061a
 branches:
   - name: stable/yoga
     location: 13.0.0.0rc1
+  - name: unmaintained/yoga
+    location: yoga-eom
 release-notes: https://docs.openstack.org/releasenotes/murano/yoga.html

deliverables/yoga/python-muranoclient.yaml

@@ -15,7 +15,14 @@ releases:
     projects:
       - repo: openstack/python-muranoclient
         hash: b18e8589f7ede2f643fe4d11cf0a0115361e951a
+  - version: yoga-eom
+    projects:
+      - repo: openstack/python-muranoclient
+        hash: 1f751d8f0e0776b73c21ea5615a2f105050e01a7
 branches:
   - name: stable/yoga
     location: 2.4.1
-release-notes: https://docs.openstack.org/releasenotes/python-muranoclient/yoga.html
+  - name: unmaintained/yoga
+    location: yoga-eom
+release-notes:
+  https://docs.openstack.org/releasenotes/python-muranoclient/yoga.html