fix: ACL value can be null even when using Terragrunt

[antonbabenko]

References:
gruntwork-io/terragrunt#892

terragrunt.hcl:

inputs = {
  bucket        = "my-awesome-logs"

  acl    = "null"   # <= It is not possible to pass `null` here from terragrunt, so passing `"null"` as string instead.
  grant = [
    {
    type        = "CanonicalUser"
    permissions = ["FULL_CONTROL"]
    id          = dependency.aws-data.outputs.aws_canonical_user_id
    }, {
    type        = "CanonicalUser"
    permissions = ["FULL_CONTROL"]
    id          = "c4c1ede66af53448b93c283ce9448c4ba468c9432aa01d700d3878632f77d2d0"
    # Ref. https://github.com/terraform-providers/terraform-provider-aws/issues/12512
    # Ref. https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/AccessLogs.html
  }]
}

[antonbabenko]

v1.22.0 has been just released.

[github-actions]

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