python.pkgs.bootstrapped-pip: fix hash

Hash was forgotten in
a26ae760e2.
The newer version of pkg_resources, 36.4.0, is actually incomplete.
Therefore, let's stick with the older version which didn't cause any
issues.

pkgs/development/python-modules/bootstrapped-pip/default.nix

@@ -18,7 +18,7 @@ let
   # https://github.com/NixOS/nixpkgs/issues/26392
   # https://github.com/pypa/setuptools/issues/885
   pkg_resources = fetchurl {
-    url = "https://raw.githubusercontent.com/pypa/setuptools/v36.4.0/pkg_resources/__init__.py";
+    url = "https://raw.githubusercontent.com/pypa/setuptools/v36.0.1/pkg_resources/__init__.py";
     sha256 = "1wdnq3mammk75mifkdmmjx7yhnpydvnvi804na8ym4mj934l2jkv";
   };