missing run_link from outputs (apply-run action)

The action [apply-run](https://github.com/hashicorp/tfc-workflows-github/blob/main/actions/apply-run/action.yml#L31) is missing the **run_link** from outputs even though it's part of the final payload of the actual run.

This is a sample payload
```
{
"run_id": "run-5JiwDkFbfzKDYcYz",
"run_link": "https://app.terraform.io/app//workspaces//runs/run-5JiwDkFbfzKDYcYz",
"run_status": "applied",
"status": "Success"
}
```

For context: some other action like [create-run](https://github.com/hashicorp/tfc-workflows-github/blob/main/actions/create-run/action.yml#L62) are already have this defined as an output