The `add-path` command is disabled.

[jortfal]

I'm trying to use this action:

- name: Install Terraform Docs
uses: lablabs/setup-terraform-docs@v1
with:
terraform_docs_version: v0.11.2

But it's not working:

Error: Unable to process command '::add-path::/home/runner/terraform_docs/bin' successfully.
Error: The add-path command is disabled. Please upgrade to using Environment Files or opt into unsecure command execution by setting the ACTIONS_ALLOW_UNSECURE_COMMANDS environment variable to true. For more information see: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/