add python 3.13 to the list

Author: williambdean

setup.py

@@ -34,6 +34,7 @@
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "License :: OSI Approved :: Apache Software License",
     "Intended Audience :: Science/Research",
     "Topic :: Scientific/Engineering",