Test with Python 3.12 and 3.13

Run test suite with more up-to-date Python releases.

setup.cfg

@@ -23,6 +23,7 @@ classifier =
 python_requires = >= 3.9
 packages = find:
 install_requires =
+    setuptools
     bidict ~= 0.18
     httpx ~= 0.22
     json-rpc ~= 1.12