Merge branch 'update_netcdf_superbuild' into 'develop'

Update netcdf version in Superbuild to 4.7.3

See merge request orfeotoolbox/otb!662

SuperBuild/CMake/External_netcdf.cmake

@@ -36,8 +36,8 @@ endif()
 
 ExternalProject_Add(NETCDF
   PREFIX NETCDF
-  URL "https://www.unidata.ucar.edu/downloads/netcdf/ftp/netcdf-4.4.1.1.tar.gz"
-  URL_MD5 503a2d6b6035d116ed53b1d80c811bda
+  URL "https://www.unidata.ucar.edu/downloads/netcdf/ftp/netcdf-c-4.7.3.tar.gz"
+  URL_MD5 9e1d7f13c2aef921c854d87037bcbd96
   SOURCE_DIR ${NETCDF_SB_SRC}
   BINARY_DIR ${NETCDF_SB_BUILD_DIR}
   INSTALL_DIR ${SB_INSTALL_PREFIX}