gnuchess: 6.2.11 -> 6.3.0

pkgs/by-name/gn/gnuchess/package.nix

···
 
 stdenv.mkDerivation rec {
   pname = "gnuchess";
-  version = "6.2.11";
+  version = "6.3.0";
 
   src = fetchurl {
     url = "mirror://gnu/chess/gnuchess-${version}.tar.gz";
-    sha256 = "sha256-2BFA7qXGnRSwz7Y4FtS0yeGPulH1Jn3lsVOfRok56b0=";
+    sha256 = "sha256-Cze+wgmMKtaVt0Q+XXlE3G3IKE+NAfzDC9uU3QM8ojo=";
   };
 
   buildInputs = [