Drop support for Python 3.9

Change-Id: If7d8ce2be7081fdcd609c54a211c91439cddce6b
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

.zuul.yaml

@@ -23,8 +23,8 @@
       zuul_work_dir: src/opendev.org/openstack/python-openstackclient
 
 - job:
-    name: osc-tox-py39-tips
-    parent: openstack-tox-py39
+    name: osc-tox-py310-tips
+    parent: openstack-tox-py310
     description: |
       Run unit tests for OpenStackClient with master branch of important libs.
 
@@ -43,8 +43,8 @@
       zuul_work_dir: src/opendev.org/openstack/python-openstackclient
 
 - job:
-    name: osc-tox-py312-tips
-    parent: openstack-tox-py312
+    name: osc-tox-py313-tips
+    parent: openstack-tox-py313
     description: |
       Run unit tests for OpenStackClient with master branch of important libs.
 
@@ -155,12 +155,12 @@
     name: osc-tox-unit-tips
     check:
       jobs:
-        - osc-tox-py39-tips
-        - osc-tox-py312-tips
+        - osc-tox-py310-tips
+        - osc-tox-py313-tips
     gate:
       jobs:
-        - osc-tox-py39-tips
-        - osc-tox-py312-tips
+        - osc-tox-py310-tips
+        - osc-tox-py313-tips
 
 - project:
     templates:

releasenotes/notes/drop-python-39-fc95c2d17a862e3e.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    Support for Python 3.9 has been dropped.

setup.cfg

@@ -7,7 +7,7 @@ description_content_type = text/x-rst
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/python-openstackclient/latest/
-python_requires = >=3.9
+python_requires = >=3.10
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -16,10 +16,10 @@ classifier =
     Operating System :: POSIX :: Linux
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
 
 [files]
 packages =