Update Python version support.

Author: icemac

setup.py

@@ -50,11 +50,11 @@ def read(*rnames):
         'License :: OSI Approved :: Zope Public License',
         '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',
+        'Programming Language :: Python :: 3.14',
         'Programming Language :: Python :: Implementation',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
@@ -64,7 +64,7 @@ def read(*rnames):
         '': ['*.txt', '*.zcml'],
     },
     zip_safe=False,
-    python_requires='>=3.9',
+    python_requires='>=3.10',
     install_requires=[
         'BTrees',
         'setuptools',