build(deps): update hashicorp/aws requirement from ~> 4.0 to ~> 5.6 (#8)

Updates the requirements on [hashicorp/aws](https://github.com/hashicorp/terraform-provider-aws) to permit the latest version.
- [Release notes](https://github.com/hashicorp/terraform-provider-aws/releases)
- [Changelog](https://github.com/hashicorp/terraform-provider-aws/blob/main/CHANGELOG.md)
- [Commits](hashicorp/terraform-provider-aws@v4.0.0...v5.6.2)

---
updated-dependencies:
- dependency-name: hashicorp/aws
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

versions.tf

@@ -5,7 +5,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 5.6"
     }
   }
 }