Retrieves a RetrospectiveProcessGroup Step

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

{
  "data": {
    "id": "3c2cc40b-55c8-45b2-9692-d475b9480223",
    "type": "retrospective_process_group_steps",
    "attributes": {
      "retrospective_process_group_id": "4b80abab-e25e-461b-84f8-4f35998d2dbb",
      "retrospective_step_id": "f8df6e6e-4106-4d1c-8310-5e76c15df95b",
      "position": 1,
      "updated_at": "2025-10-28T14:29:27.861-07:00",
      "created_at": "2025-10-28T14:29:27.861-07:00"
    }
  }
}