Drop Python 3.10

Python 3.11 is the minimum runtime for 2026.2 (Hibiscus) and
add Python 3.13 and 3.14.

https://governance.openstack.org/tc/reference/runtimes/2026.2.html

Change-Id: I2832861d2e9a3786398ad21ac11d5fe6164024f7
Signed-off-by: Ivan Anfimov <lazekteam@gmail.com>

setup.cfg

@@ -6,7 +6,7 @@ description_file =
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/trove/latest/
-python_requires = >= 3.10
+python_requires = >= 3.11
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -17,9 +17,10 @@ classifier =
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
+    Programming Language :: Python :: 3.14
 
 [files]
 data_files =