Retrieves a retrospective process

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

{
  "data": {
    "id": "de454204-0a0b-45e8-b90c-d01019470ce3",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Esse assumenda ad est.",
      "description": "Est explicabo cupiditate. Tempore doloribus id. Odit enim sunt.",
      "is_default": false,
      "created_at": "2025-08-28T14:04:25.768-07:00",
      "updated_at": "2025-08-28T14:04:25.768-07:00",
      "retrospective_process_matching_criteria": {
        "incident_type_ids": [
          "58ea0de7-c8a3-45ee-9467-1e912056ffe8"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "b2355d4c-b8cd-43e6-9855-5e24f66837cc",
            "type": "retrospective_steps"
          },
          {
            "id": "231b6a34-abcb-4d93-9c5a-848f5e6aef99",
            "type": "retrospective_steps"
          }
        ]
      },
      "incident_types": {
        "data": [
          {
            "id": "58ea0de7-c8a3-45ee-9467-1e912056ffe8",
            "type": "incident_types"
          }
        ]
      }
    }
  }
}