INT-3746: Fix exception message

spring-integration-file/src/main/java/org/springframework/integration/file/remote/RemoteFileTemplate.java

@@ -500,7 +500,7 @@ public class RemoteFileTemplate<F> implements RemoteFileOperations<F>, Initializ
 			}
 			else {
 				throw new IllegalArgumentException("Unsupported payload type. The only supported payloads are " +
-							"java.io.File, java.lang.String, and byte[]");
+							"java.io.File, java.lang.String, byte[], and InputStream");
 			}
 			if (dataInputStream == null) {
 				return null;