Update GraphDef version to 849.

PiperOrigin-RevId: 388884805
Change-Id: I2cc0f3afa300de535dad32cdcda43a60803100d4
diff --git a/tensorflow/core/public/version.h b/tensorflow/core/public/version.h
index 22ebb8f..0a8bb0a 100644
--- a/tensorflow/core/public/version.h
+++ b/tensorflow/core/public/version.h
@@ -108,7 +108,7 @@
 
 #define TF_GRAPH_DEF_VERSION_MIN_PRODUCER 0
 #define TF_GRAPH_DEF_VERSION_MIN_CONSUMER 0
-#define TF_GRAPH_DEF_VERSION 848  // Updated: 2021/8/4
+#define TF_GRAPH_DEF_VERSION 849  // Updated: 2021/8/5
 
 // Checkpoint compatibility versions (the versions field in SavedSliceMeta).
 //