Upgrade AWS SDK to the latest version

vendor/github.com/aws/aws-sdk-go/service/lambda/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 lambda
 
@@ -11,15 +11,12 @@ import (
 	"github.com/aws/aws-sdk-go/private/protocol/restjson"
 )
 
-// Overview
+// Lambda provides the API operation methods for making requests to
+// AWS Lambda. See this package's package overview docs
+// for details on the service.
 //
-// This is the AWS Lambda API Reference. The AWS Lambda Developer Guide provides
-// additional information. For the service overview, see What is AWS Lambda
-// (http://docs.aws.amazon.com/lambda/latest/dg/welcome.html), and for information
-// about how the service works, see AWS Lambda: How it Works (http://docs.aws.amazon.com/lambda/latest/dg/lambda-introduction.html)
-// in the AWS Lambda Developer Guide.
-// The service client's operations are safe to be used concurrently.
-// It is not safe to mutate any of the client's properties though.
+// Lambda methods are safe to use concurrently. It is not safe to
+// modify mutate any of the struct's properties though.
 type Lambda struct {
 	*client.Client
 }