feat(transcoding): removed unnecessary encoding

extensions/grpc/runtime/src/main/java/io/quarkus/grpc/runtime/transcoding/GrpcTranscodingResponse.java

@@ -167,7 +167,7 @@ private Future<Void> writeMessage(GrpcMessage message, boolean end) {
                     responseHeaders.add(header.getKey(), header.getValue());
                 }
             }
-            
+
             responseHeaders.set("content-type", "application/json");
             responseHeaders.set("content-length", String.valueOf(encoded.length()));
         }