Merge "Remove Python 3.8 support"

releasenotes/notes/drop-python-3-8-be290cb9ad6de748.yaml

@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    Python 3.8 support was dropped. The minimum version of Python now supported
+    is Python 3.9.

setup.cfg

@@ -7,7 +7,7 @@ description_file =
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/python-heatclient/latest
-python_requires = >=3.8
+python_requires = >=3.9
 classifier =
     Development Status :: 5 - Production/Stable
     Environment :: Console
@@ -18,7 +18,6 @@ classifier =
     Operating System :: POSIX :: Linux
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11