Is the pulumi CLI tool able to connect to an S3 backend via AWS SSO? Here's how far I got:

>pulumi login "<s3://my-bucket-name?region=us-east-1&awssdk=v2&profile=my-profile-name>"

error: problem logging in: read ".pulumi\\meta.yaml": blob (key ".pulumi/meta.yaml") (code=Unknown): operation error S3: GetObject, https response error StatusCode: 400, RequestID: XXXXXXX, HostID: XXXXXX, api error AuthorizationHeaderMalformed: The authorization header is malformed; a non-empty Access Key (AKID) must be provided in the credential.