Update version number in readiness for V10.3.0 release. Sync SVN with reviewed release candidate. 
diff --git a/FreeRTOS/Source/include/message_buffer.h b/FreeRTOS/Source/include/message_buffer.h
index 745f0b6..9923b33 100644
--- a/FreeRTOS/Source/include/message_buffer.h
+++ b/FreeRTOS/Source/include/message_buffer.h
@@ -1,6 +1,6 @@
 /*

- * FreeRTOS Kernel V10.2.1

- * Copyright (C) 2019 Amazon.com, Inc. or its affiliates.  All Rights Reserved.

+ * FreeRTOS Kernel V10.3.0

+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.

  *

  * Permission is hereby granted, free of charge, to any person obtaining a copy of

  * this software and associated documentation files (the "Software"), to deal in