problem with go mod

[fishincat]

go mod tidy has problem as below:
github.com/juicedata/juicefs/pkg/object imports github.com/ks3sdklib/aws-sdk-go/aws tested by github.com/ks3sdklib/aws-sdk-go/aws.test imports github.com/ks3sdklib/aws-sdk-go/service/dynamodb: module github.com/ks3sdklib/aws-sdk-go@latest found (v1.0.12), but does not contain package github.com/ks3sdklib/aws-sdk-go/service/dynamodb

refs: ks3sdklib/aws-sdk-go#12

[davies]

@fishincat We have upgrade ks3sdklib/aws-sdk-go to v1.0.12, this should be solved, please try again.