Update netCDF version in netCDF-C++

intel-2018/netCDF-C++4-4.3.0-intel-2018.eb

@@ -13,8 +13,9 @@ toolchainopts = {'pic': True}
 
 source_urls = ['https://github.com/Unidata/netcdf-cxx4/archive/']
 sources = ['v%(version)s.tar.gz']
+checksums = ['25da1c97d7a01bc4cee34121c32909872edd38404589c0427fefa1301743f18f']
 
-dependencies = [('netCDF', '4.4.1.1')]
+dependencies = [('netCDF', '4.6.0')]
 
 sanity_check_paths = {
     'files': ['include/netcdf', 'lib/libnetcdf_c++4.a', 'lib/libnetcdf_c++4.%s' % SHLIB_EXT],