feat: update terraform-aws-modules/sns/aws requirement from ~> 3.0 to…

… ~> 6.1

Updates the requirements on [terraform-aws-modules/sns/aws](https://github.com/terraform-aws-modules/terraform-aws-sns) to permit the latest version.
- [Release notes](https://github.com/terraform-aws-modules/terraform-aws-sns/releases)
- [Changelog](https://github.com/terraform-aws-modules/terraform-aws-sns/blob/master/CHANGELOG.md)
- [Commits](terraform-aws-modules/terraform-aws-sns@v3.0.0...v6.1.1)

---
updated-dependencies:
- dependency-name: terraform-aws-modules/sns/aws
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

monitoring.tf

@@ -92,7 +92,7 @@ resource "aws_kms_alias" "backup_sns" {
 
 module "sns_topic" {
   source  = "terraform-aws-modules/sns/aws"
-  version = "~> 3.0"
+  version = "~> 6.1"
 
 
   name              = "backups_${var.env}"