Update json version to 10500.

Author: hqucms

DeepBoostedJet/V02/decorrelated/resnet-symbol.json

@@ -3312,5 +3312,5 @@
     303
   ], 
   "heads": [[245, 0, 0]], 
-  "attrs": {"mxnet_version": ["int", 10201]}
+  "attrs": {"mxnet_version": ["int", 10500]}
 }

DeepBoostedJet/V02/full/resnet-symbol.json

@@ -2586,5 +2586,5 @@
     272
   ], 
   "heads": [[222, 0, 0]], 
-  "attrs": {"mxnet_version": ["int", 10201]}
+  "attrs": {"mxnet_version": ["int", 10500]}
 }