Restrict setuptools version to <v65

During the installation of FisherExact, the build is isolated and use the latest version of setuptools to build the package.
The latest setuptools release (>65), removed old deprecated msvc modules. It breaks the build of some packages which depend on this.
See: pypa/setuptools#3532

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
 requires = [
-    "setuptools >= 40.6.0",
+    "setuptools >= 40.6.0, < 65.0.0",
     "wheel",
     "numpy == 1.21.6",
 ]