Retrieves an alert group

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

{
  "data": {
    "id": "758d9c2c-4d5a-4c89-8b4e-5883c6c83331",
    "type": "alert_groups",
    "attributes": {
      "name": "123 test group",
      "slug": "123-test-group",
      "description": null,
      "time_window": 10,
      "condition_type": "any",
      "group_by_alert_title": false,
      "group_by_alert_urgency": false,
      "deleted_at": null,
      "created_at": "2025-05-29T17:39:58.258-07:00",
      "updated_at": "2025-05-29T17:39:58.258-07:00",
      "targets": [
        {
          "id": "a5e456bf-5043-4966-af6c-a27f9b720a41",
          "target_type": "Service",
          "target_id": "69b3b2df-eb87-4402-bd1c-da4e3cf5a045",
          "alert_group_id": "758d9c2c-4d5a-4c89-8b4e-5883c6c83331",
          "deleted_at": null,
          "created_at": "2025-05-29T17:39:58.260-07:00",
          "updated_at": "2025-05-29T17:39:58.260-07:00"
        }
      ],
      "attributes": []
    }
  }
}