Drop support for python 3.9

Author: honnibal

setup.cfg

@@ -30,7 +30,7 @@ classifiers =
 [options]
 zip_safe = false
 include_package_data = true
-python_requires = >=3.9,<3.15
+python_requires = >=3.10,<3.15
 setup_requires =
     cython>=3.0,<4.0
     numpy>=2.0.0,<3.0.0