pgroonga: 2.0.3 -> 2.0.4

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

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

These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 2.0.4 with grep in /nix/store/hyp69cvzva8cqx4ra33mdvyi8jwl7lzr-pgroonga-2.0.4
- directory tree listing: https://gist.github.com/35ee8b9cab2a9568994e16e9555ce3ff

pkgs/servers/sql/postgresql/pgroonga/default.nix

@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "pgroonga-${version}";
-  version = "2.0.3";
+  version = "2.0.4";
 
   src = fetchurl {
     url = "http://packages.groonga.org/source/pgroonga/${name}.tar.gz";
-    sha256 = "0jlaxkj33dgr2hgh0f861ja1z53kqw0g1syinl2sacsna2i9pdxy";
+    sha256 = "0hx7bzxmjv0rsvv6b77gpmwhw4ajy8sgjbmrg7hj3dc51kiyiai0";
   };
 
   nativeBuildInputs = [ pkgconfig ];