update changelog

Signed-off-by: Ben Ye <[email protected]>

Author: yeya24

CHANGELOG.md

@@ -68,4 +68,6 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#71](https://github.com/thanos-io/objstore/pull/71) Replace method `IsCustomerManagedKeyError` for a more generic `IsAccessDeniedErr` on the bucket interface.
 - [#89](https://github.com/thanos-io/objstore/pull/89) GCS: Upgrade cloud.google.com/go/storage version to `v1.35.1`.
 - [#123](https://github.com/thanos-io/objstore/pull/123) *: Upgrade minio-go version to `v7.0.71`.
+- [#103](https://github.com/thanos-io/objstore/pull/103) *: Don't return error in metric bucket if the error is expected.
+
 ### Removed