Updated aws-sdk to verison 3 @aws-sdk/client-sqs

Since aws-sdk for JavaScript (v2) is going into maintenance mode in 2023, this package has been updated to use newer version of aws-sdk. Here are the steps for migration

Migration steps from Version 3 to Version 4 of sqs-bulk-loader

• Add @aws-sdk/client-sqs as peer dependency instead of aws-sdk
• Rest of the code should work as it is. The response structure has changed slightly.
  More information can be found here

To use aws-sdk version 2, please use version 3 of sqs-bulk-loader.

What's Changed

• Bump qs from 6.5.2 to 6.5.3 by @dependabot in #29
• Update aws sdk by @montumodi in #32

Full Changelog: v3.5.0...v4.0.0

Moved `aws-sdk` to peer dependency

• aws-sdk has now been moved to peer dependency of this project instead of dependency. Make sure [email protected] is installed.

Dropped support for Node 8

• Update versions of aws-sdk
• Also dropped support for node 8