Is your feature request related to a problem? Please describe.
The dependency used for connecting to S3 in cube.js is https://github.com/durch/rust-s3. It only supports IMDSv1 which is insecure and sometimes banned globally for some organisation. IMDSv2 is the secure replacement and isn't supported by rust-s3. As a result, cube.js running in AWS on EC2 (the problem may extend to anything AWS) is unable to access S3 and compute pre-aggregations using S3 since credentials can't be obtained from the instance via IMDS.
More documentation on IMDS at https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html

Describe the solution you'd like
AWS has released their official rust SDK which includes S3 and is in developer preview. It would be great if we could add a feature/config flag to use the AWS SDK over rust-s3 in cube.js. At least while it's in developer preview and ultimately switch to the AWS SDK completely

Describe alternatives you've considered
The alternative would be to stick with v1 which might be possible at some organisation. Using other authentication mechanisms such as keypairs is often banned as well.

Additional context
Code from rust-s3 getting the credentials from instance metadata is here and you can see it's not requesting a token before issuing the request as recommended with v2