Python: many package updates

Did not test all packages. Likely we'll have some breakage.

pkgs/development/python-modules/bcrypt.nix

@@ -4,13 +4,13 @@
 with stdenv.lib;
 
 buildPythonPackage rec {
-  version = "3.1.2";
+  version = "3.1.3";
   pname = "bcrypt";
   name = "${pname}-${version}";
 
   src = fetchurl {
     url = "mirror://pypi/b/bcrypt/${name}.tar.gz";
-    sha256 = "1al54xafv1aharpb22yv5rjjc63fm60z3pn2shbiq48ah9f1fvil";
+    sha256 = "6645c8d0ad845308de3eb9be98b6fd22a46ec5412bfc664a423e411cdd8f5488";
   };
   buildInputs = [ pycparser mock pytest py ];
   propagatedBuildInputs = [ six ] ++ optional (!isPyPy) cffi;