Retrieves a secret

curl --request GET \
  --url https://api.rootly.com/v1/secrets/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "<string>",
    "type": "secrets",
    "attributes": {
      "name": "<string>",
      "created_at": "<string>",
      "updated_at": "<string>",
      "secret": "<string>",
      "hashicorp_vault_mount": "<string>",
      "hashicorp_vault_path": "<string>",
      "hashicorp_vault_version": 123
    }
  }
}