netcdfcxx4: 4.2.1 -> 4.3.0

pkgs/development/libraries/netcdf-cxx4/default.nix

···
 { stdenv, fetchurl, netcdf, hdf5, curl }:
 stdenv.mkDerivation rec {
   name = "netcdf-cxx4-${version}";
-  version = "4.2.1";
+  version = "4.3.0";
 
   src = fetchurl {
     url = "https://github.com/Unidata/netcdf-cxx4/archive/v${version}.tar.gz";
-    sha256 = "1g0fsmz59dnjib4a7r899lm99j3z6yxsw10c0wlihclzr6znmmds";
+    sha256 = "13zi8cbk18gggx1c12a580wdsbl714lw68a1wg7c86x0sybirni5";
   };
 
   buildInputs = [ netcdf hdf5 curl ];