update vendor

vendor/github.com/aws/aws-sdk-go/LICENSE.txt

vendor/github.com/aws/aws-sdk-go/NOTICE.txt

vendor/github.com/aws/aws-sdk-go/aws/awserr/error.go

vendor/github.com/aws/aws-sdk-go/aws/awserr/types.go

vendor/github.com/aws/aws-sdk-go/aws/awsutil/copy.go

vendor/github.com/aws/aws-sdk-go/aws/awsutil/equal.go

vendor/github.com/aws/aws-sdk-go/aws/awsutil/path_value.go

vendor/github.com/aws/aws-sdk-go/aws/awsutil/prettify.go

vendor/github.com/aws/aws-sdk-go/aws/awsutil/string_value.go

vendor/github.com/aws/aws-sdk-go/aws/client/client.go

...r/github.com/aws/aws-sdk-go/aws/client/default_retryer.go

...hub.com/aws/aws-sdk-go/aws/client/metadata/client_info.go

vendor/github.com/aws/aws-sdk-go/aws/config.go

vendor/github.com/aws/aws-sdk-go/aws/convert_types.go

...or/github.com/aws/aws-sdk-go/aws/corehandlers/handlers.go

...ub.com/aws/aws-sdk-go/aws/corehandlers/param_validator.go

...thub.com/aws/aws-sdk-go/aws/credentials/chain_provider.go

.../github.com/aws/aws-sdk-go/aws/credentials/credentials.go

...-sdk-go/aws/credentials/ec2rolecreds/ec2_role_provider.go

...github.com/aws/aws-sdk-go/aws/credentials/env_provider.go