Publish to pub.dev

[stevenmetzger]

Thanks for the amazing package. I'm using the version of this package available on pub.dev. https://pub.dev/packages/shared_aws_api/versions

This version does not include any of the upgrades from the past 11 months. Specifically I need the update to the http dependency to allow http: '>=0.13.1 <2.0.0'.

Thanks for updating the version numbers and publishing your changes.

[stevenmetzger]

Duplicate of #406