pony-stable: 0.1.2 -> 0.1.3

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/pony-stable/versions.

These checks were done:

- built on NixOS
- /nix/store/d6b9yh4mbc6g4ysgzzdj4xbi49cy228m-pony-stable-0.1.3/bin/stable passed the binary check.
- 1 of 1 passed binary check by having a zero exit code.
- 0 of 1 passed binary check by having the new version present in output.
- found 0.1.3 with grep in /nix/store/d6b9yh4mbc6g4ysgzzdj4xbi49cy228m-pony-stable-0.1.3
- directory tree listing: https://gist.github.com/b5577bbf57ef8fa733c1e1aee8ab8908
- du listing: https://gist.github.com/c69c238d1ab5c35fba5ade17f912bed5

pkgs/development/compilers/ponyc/pony-stable.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "pony-stable-${version}";
-  version = "0.1.2";
+  version = "0.1.3";
 
   src = fetchFromGitHub {
     owner = "ponylang";
     repo = "pony-stable";
     rev = version;
-    sha256 = "1g0508r66qjx857cb1cycq98b0gw7s1zn1l7bplyj1psk8mqh7kz";
+    sha256 = "0dnj9d35fa0iaka2lsc7cvn9d2qbasknn1c3gbxdyc9drf9vv6kf";
   };
 
   buildInputs = [ ponyc ];