Merge "Remove Python 3.9 support"

releasenotes/notes/remove-py39-7c8a2397befd6ecc.yaml

@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    Support for Python 3.9 has been removed. Now Python 3.10 is the minimum
+    version supported.

setup.cfg

@@ -5,7 +5,7 @@ long_description = file: README.rst
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 url = https://docs.openstack.org/cinder/latest/
-python_requires = >=3.9
+python_requires = >=3.10
 classifiers =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -16,9 +16,9 @@ classifiers =
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
+    Programming Language :: Python :: 3.12
 project_urls:
     Source=https://opendev.org/openstack/cinder
     Tracker=https://bugs.launchpad.net/cinder