feat!: Upgrade AWS provider and min required Terraform version to 6.0 and 1.10 respectively

[iodeslykos]

Description

• Updated .name -> .region
• Removed examples/complete-legacy
• Added support for region in all resources

Closes #333

Breaking Changes

It is fully compatible with v6, but will cause issues with anything less. Justifies a major version jump of the module.

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

[antonbabenko]

This PR is included in version 5.0.0 🎉

[nightspotlight]

I think examples/complete should be updated to demo the new region input. Move region = local.region from provider settings to every module call.

Outputs should have been updated as well:

Resource aws_s3_bucket

bucket_region has been added and should be used instead of region, which is now used for Enhanced Region Support.

output "s3_bucket_region" {
  description = "The AWS region this bucket resides in."
-  value       = try(aws_s3_bucket.this[0].region, "")
+  value       = try(aws_s3_bucket.this[0].bucket_region, "")
}

[antonbabenko]

@nightspotlight region is optional. If the value is identical to the one specified by the provider, it can be omitted. Let's leave it as is in the examples.

The output has been fixed in #343