Update Python version support.

Author: icemac

setup.py

@@ -46,11 +46,11 @@ 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 :: CPython',
           'Programming Language :: Python :: Implementation :: PyPy',
           'Natural Language :: English',
@@ -60,7 +60,7 @@ def read(*rnames):
       ],
       url='https://github.com/zopefoundation/zope.principalregistry',
       license='ZPL-2.1',
-      python_requires='>=3.9',
+      python_requires='>=3.10',
       install_requires=[
           'setuptools',
           'zope.authentication',