the docs aren't clear for me re: terraform versions.

NOTE

Atlantis will automatically download the latest version that fulfills the constraint specified. A terraform_version specified in the atlantis.yaml file takes precedence over both the --default-tf-version flag and the required_version in the terraform hcl.

NOTE

The Atlantis latest docker image
tends to have recent versions of Terraform, but there may be a delay as new versions are released. The highest version of Terraform allowed in your code is the version specified by DEFAULT_TERRAFORM_VERSION in the image your server is running.

so will atlantis download the latest version that fulfils the constraint specifed, or is the highest version allowed specified by

DEFAULT_TERRAFORM_VERSION

? which one is it?