Upgrade AWS SDK to the latest version

vendor/github.com/aws/aws-sdk-go/service/machinelearning/service.go

@@ -1,4 +1,4 @@
-// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.
+// Code generated by private/model/cli/gen-api/main.go. DO NOT EDIT.
 
 package machinelearning
 
@@ -11,9 +11,12 @@ import (
 	"github.com/aws/aws-sdk-go/private/protocol/jsonrpc"
 )
 
-// Definition of the public APIs exposed by Amazon Machine Learning
-// The service client's operations are safe to be used concurrently.
-// It is not safe to mutate any of the client's properties though.
+// MachineLearning provides the API operation methods for making requests to
+// Amazon Machine Learning. See this package's package overview docs
+// for details on the service.
+//
+// MachineLearning methods are safe to use concurrently. It is not safe to
+// modify mutate any of the struct's properties though.
 type MachineLearning struct {
 	*client.Client
 }