Bump and adapt AWS dependency to version 2.0

[inigo-cobian]

Changelog:

• Updated the AWS dependencies to the new distribution
• Changed the HortonMachine snapshot to a new version
• Add s3BucketRegion parameter to STAC resources

[iperdomo]

Not sure why we want/need the S3 async client?
https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/asynchronous.html

[inigo-cobian]

Not sure why we want/need the S3 async client?

At the moment I cannot think about a reason to prefer Async over Sync in k.LAB. But it probably has to do with downloading multiple resources in the HortonMachine. I'll take a look at it to be sure.