Fix the hash for proj4 v6

Author: dstoup

CMake/fletch-tarballs.cmake

@@ -345,7 +345,7 @@ if (fletch_ENABLE_PROJ4 OR fletch_ENABLE_ALL_PACKAGES)
   elseif(PROJ4_SELECT_VERSION VERSION_EQUAL 6.1.1)
     set(PROJ4_version "6.1.1" )
     set(PROJ4_url "http://download.osgeo.org/proj/proj-${PROJ4_version}.tar.gz" )
-    set(PROJ4_md5 "9a82a3174cacf319d94360a759fbcc8a" )
+    set(PROJ4_md5 "da39a3ee5e6b4b0d3255bfef95601890afd80709" )
   else()
     message(STATUS "PROJ4_SELECT_VERSION ${PROJ4_SELECT_VERSION}: Not supported")
   endif()