Bump rocketmq-proto from 2.0.2 to 2.0.3 (#550)

diff --git a/java/pom.xml b/java/pom.xml
index 63a5808..d39b709 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -47,7 +47,7 @@
            ~  1. Whether it is essential, because the current shaded jar is fat enough.
            ~  2. Make sure that it is compatible with Java 8.
          -->
-        <rocketmq-proto.version>2.0.2</rocketmq-proto.version>
+        <rocketmq-proto.version>2.0.3</rocketmq-proto.version>
         <annotations-api.version>6.0.53</annotations-api.version>
         <protobuf.version>3.21.7</protobuf.version>
         <grpc.version>1.50.0</grpc.version>