feat: Add support for region argument on internal resources per https…

[rockholla]

…://registry.terraform.io/providers/hashicorp/aws/latest/docs/guides/enhanced-region-support

Description

Starting in AWS provider 6.x, most provider resources now support a region arg, including the aws_ssm_parameter resource. So, we can mint a new version of this module to add support for this feature.

Motivation and Context

The spirit of that change to the provider itself is to better support dynamically provisioning things across regions w/o having to use regional provider definitions for doing so. This module supporting that as a next evolution makes sense.

Breaking Changes

The main concern here would likely be the version constraint for the AWS provider itself. Appropriate communication of the change in required AWS provider via meaningful semantic versioning of this module should address this concern, 1.3.0 or 2.0.0. The region arg itself w/ a default of null would continue to make the default region for resources provider-based (how it's worked until now).

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request

[rockholla]

just noting that this was returning nothing w/ the previous query in the configured eu-west-1, so updated.