Retrieves a RetrospectiveProcessGroup Step

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

{
  "data": {
    "id": "946cc5ef-3938-456f-a7f9-01e4f25056b6",
    "type": "retrospective_process_group_steps",
    "attributes": {
      "retrospective_process_group_id": "8308eb7f-1221-468d-a71d-6a2a86d8696a",
      "retrospective_step_id": "3090cf9c-4142-4758-b5eb-0299b26ee783",
      "position": 1,
      "updated_at": "2025-07-30T02:13:45.380-07:00",
      "created_at": "2025-07-30T02:13:45.380-07:00"
    }
  }
}