Consider upgrading aws sdk dependency to v2

[anthony-foulfoin]

An AWS java sdk v2 is available, the announcement post: https://aws.amazon.com/fr/blogs/developer/aws-sdk-for-java-2-x-released
Since the announcement, more features have been added, here is the complete changelog: https://github.com/aws/aws-sdk-java-v2/blob/master/docs/LaunchChangelog.md

It brings some improvements that could not be fixed in v1.11.x since they are breaking changes.

For instance, the parsing of the ~/.aws/config and ~/.aws/credentials files has changed to be more close of the AWS CLI, the v1 java sdk and the current AWS CLI do not parse these files the same way, which can cause troubles.

[artembilan]

Duplicates #267