Update 5034 build file to use libgd-2.3.2

I missed this in #41

Author: shawnlaffan

5034

@@ -49,7 +49,7 @@ harfbuzz-2.3.1
 freetype-2.10.0
 
 fontconfig-2.13.1
-libgd-2.2.5
+libgd-2.3.2
 t1lib-5.1.2
 
 ###### extras