update cl_khr_command_buffer extension version to v0.9.8

Author: bashbaug

layers/10_cmdbufemu/emulate.cpp

@@ -20,9 +20,9 @@
 #include "emulate.h"
 
 static constexpr cl_version version_cl_khr_command_buffer =
-    CL_MAKE_VERSION(0, 9, 7);
+    CL_MAKE_VERSION(0, 9, 8);
 static constexpr cl_version version_cl_khr_command_buffer_mutable_dispatch =
-    CL_MAKE_VERSION(0, 9, 3);
+    CL_MAKE_VERSION(0, 9, 4);
 
 SLayerContext& getLayerContext(void)
 {