chore(release): 6.21.0 [skip ci]

# [6.21.0](v6.20.0...v6.21.0) (2024-08-16)

### Bug Fixes

* add check to file of get([#1228](#1228)) ([c52bd5b](c52bd5b))
* queries sort in signatureUrl and add cases ([b3cc7a0](b3cc7a0))

### Features

*  bucket options support set headers ([#1306](#1306)) ([b4fb361](b4fb361))
* callback supports callbackSNI ([#1291](#1291)) ([fc6040b](fc6040b))
* multipartUpload supports setting storage-class header ([#1308](#1308)) ([c29e15a](c29e15a)), closes [#56237770](https://github.com/ali-sdk/ali-oss/issues/56237770)
* putBucketInventory supports new fields ([#1290](#1290)) ([6bde1c2](6bde1c2))
* putBucketLifecycle supports ColdArchive and DeepColdArchive ([#1256](#1256)) ([4c028d6](4c028d6))
* support EC Code and get error detail from header  ([#1317](#1317)) ([5a95778](5a95778))