build: update setuptools pin

Versions of setuptools before 66.1 used deprecated portions of `pkgutil`
that were removed in Python 3.12. More information:

pypa/setuptools#3631
https://setuptools.pypa.io/en/latest/history.html#v66-1-0

Author: SnoopJ

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools~=63.0", "wheel"]
+requires = ["setuptools~=66.1", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools]