Bump hashicorp/aws from 6.15.0 to 6.16.0 in /terraform in the ci group

Bumps the ci group in /terraform with 1 update: [hashicorp/aws](https://github.com/hashicorp/terraform-provider-aws).


Updates `hashicorp/aws` from 6.15.0 to 6.16.0
- [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@v6.15.0...v6.16.0)

---
updated-dependencies:
- dependency-name: hashicorp/aws
  dependency-version: 6.16.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: ci
...

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

Author: dependabot[bot]

terraform/.terraform.lock.hcl

@@ -2,7 +2,7 @@ terraform {
   required_providers {
     aws = {
       source = "hashicorp/aws"
-      version = "~> 6.15.0"
+      version = "~> 6.16.0"
     }
   }