vendor: update all dependencies to latest versions

vendor/github.com/aws/aws-sdk-go/service/cloudformation/cloudformationiface/interface.go

@@ -226,6 +226,10 @@ type CloudFormationAPI interface {
 	UpdateStackWithContext(aws.Context, *cloudformation.UpdateStackInput, ...request.Option) (*cloudformation.UpdateStackOutput, error)
 	UpdateStackRequest(*cloudformation.UpdateStackInput) (*request.Request, *cloudformation.UpdateStackOutput)
 
+	UpdateStackInstances(*cloudformation.UpdateStackInstancesInput) (*cloudformation.UpdateStackInstancesOutput, error)
+	UpdateStackInstancesWithContext(aws.Context, *cloudformation.UpdateStackInstancesInput, ...request.Option) (*cloudformation.UpdateStackInstancesOutput, error)
+	UpdateStackInstancesRequest(*cloudformation.UpdateStackInstancesInput) (*request.Request, *cloudformation.UpdateStackInstancesOutput)
+
 	UpdateStackSet(*cloudformation.UpdateStackSetInput) (*cloudformation.UpdateStackSetOutput, error)
 	UpdateStackSetWithContext(aws.Context, *cloudformation.UpdateStackSetInput, ...request.Option) (*cloudformation.UpdateStackSetOutput, error)
 	UpdateStackSetRequest(*cloudformation.UpdateStackSetInput) (*request.Request, *cloudformation.UpdateStackSetOutput)

vendor/github.com/aws/aws-sdk-go/service/cloudformation/doc.go

@@ -30,7 +30,7 @@
 //
 // Using the Client
 //
-// To AWS CloudFormation with the SDK use the New function to create
+// To contact AWS CloudFormation with the SDK use the New function to create
 // a new service client. With that client you can make API requests to the service.
 // These clients are safe to use concurrently.
 //