[glance] Create 2023.2 branch for client and non-client libs

This creates the stable/2023.2 branch for all client and non-client
libraries now that we are past the library freeze.

Note that branching deadline was last week, so please respond as soon
as possible with a +1 (or -1 if for example a gate fixing patch is on
the way).

This patch will be merged, if there is no response from the team before
Friday.

Change-Id: I9d3b8d12a8b88f2bda88a4c25a2f6eaceefbc239

deliverables/bobcat/glance-store.yaml

@@ -23,3 +23,6 @@ releases:
     projects:
       - repo: openstack/glance_store
         hash: 0c60291637d1c941dcd8d2e022acb22ba0bed440
+branches:
+  - name: stable/2023.2
+    location: 4.6.1

deliverables/bobcat/python-glanceclient.yaml

@@ -11,3 +11,6 @@ releases:
     projects:
       - repo: openstack/python-glanceclient
         hash: 62e6fc8270a3e76e6b21cf2e6385f3c4bfe56cad
+branches:
+  - name: stable/2023.2
+    location: 4.4.0