Add Python 3.12 classifier

We are testing this in CI and can support it going forward now. The
osc-tox-py310-tips job is removed in a favour of a new
osc-tox-py312-tips job.

Change-Id: I87a726cb65223cba9975d0505c13fe42dcd7fa14
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

Author: stephenfin

.zuul.yaml

@@ -38,8 +38,8 @@
       zuul_work_dir: src/opendev.org/openstack/python-openstackclient
 
 - job:
-    name: osc-tox-py310-tips
-    parent: openstack-tox-py310
+    name: osc-tox-py312-tips
+    parent: openstack-tox-py312
     description: |
       Run unit tests for OpenStackClient with master branch of important libs.
 
@@ -202,11 +202,11 @@
     check:
       jobs:
         - osc-tox-py38-tips
-        - osc-tox-py310-tips
+        - osc-tox-py312-tips
     gate:
       jobs:
         - osc-tox-py38-tips
-        - osc-tox-py310-tips
+        - osc-tox-py312-tips
 
 - project:
     templates:

setup.cfg

@@ -19,6 +19,7 @@ classifier =
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
+    Programming Language :: Python :: 3.12
 
 [files]
 packages =