terraform(deps): bump the opentofu group across 6 directories with 1 update

Updates the requirements on  and [hashicorp/aws](https://github.com/hashicorp/terraform-provider-aws) to permit the latest version.

Updates `hashicorp/aws` to 6.28.0
- [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...v6.28.0)

Updates `hashicorp/aws` to 6.28.0
- [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...v6.28.0)

Updates `hashicorp/aws` to 6.28.0
- [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...v6.28.0)

Updates `hashicorp/aws` to 6.28.0
- [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...v6.28.0)

Updates `hashicorp/aws` to 6.28.0
- [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...v6.28.0)

Updates `hashicorp/aws` to 6.28.0
- [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...v6.28.0)

---
updated-dependencies:
- dependency-name: hashicorp/aws
  dependency-version: 6.28.0
  dependency-type: direct:production
  dependency-group: opentofu
- dependency-name: hashicorp/aws
  dependency-version: 6.28.0
  dependency-type: direct:production
  dependency-group: opentofu
- dependency-name: hashicorp/aws
  dependency-version: 6.28.0
  dependency-type: direct:production
  dependency-group: opentofu
- dependency-name: hashicorp/aws
  dependency-version: 6.28.0
  dependency-type: direct:production
  dependency-group: opentofu
- dependency-name: hashicorp/aws
  dependency-version: 6.28.0
  dependency-type: direct:production
  dependency-group: opentofu
- dependency-name: hashicorp/aws
  dependency-version: 6.28.0
  dependency-type: direct:production
  dependency-group: opentofu
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

examples/basic/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 6.28"
     }
   }
 }

modules/email-notification/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 6.28"
     }
   }
 }

modules/lambda-image-build/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 6.28"
     }
   }
 }

modules/scheduled-lambda/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 6.28"
     }
   }
 }

modules/sms-notification/versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 6.28"
     }
   }
 }

versions.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 4.0"
+      version = "~> 6.28"
     }
   }
 }