chore: bump supported python versions

Author: william-silversmith

setup.cfg

@@ -13,11 +13,11 @@ classifier =
     Development Status :: 5 - Production/Stable
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
     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
     Topic :: Utilities
 
 [global]