fix ci

Author: crossoverJie

instrumentation/grpc-1.6/library/src/main/java/io/opentelemetry/instrumentation/grpc/v1_6/GrpcRequest.java

@@ -25,6 +25,7 @@ public final class GrpcRequest {
 
   private int serverRequestSize;
   private int serverResponseSize;
+
   GrpcRequest(
       MethodDescriptor<?, ?> method,
       @Nullable Metadata metadata,

instrumentation/grpc-1.6/library/src/main/java/io/opentelemetry/instrumentation/grpc/v1_6/GrpcRpcAttributesGetter.java

@@ -63,7 +63,6 @@ public int getServerResponseSize(GrpcRequest request) {
     return request.getServerResponseSize();
   }
 
-
   List<String> metadataValue(GrpcRequest request, String key) {
     if (request.getMetadata() == null) {
       return Collections.emptyList();