List incident action items

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

{
  "data": [
    {
      "id": "<string>",
      "type": "incident_action_items",
      "attributes": {
        "summary": "<string>",
        "description": "<string>",
        "kind": "task",
        "assigned_to": {
          "id": 123,
          "email": "<string>",
          "first_name": "<string>",
          "last_name": "<string>",
          "full_name": "<string>",
          "full_name_with_team": "<string>",
          "time_zone": "<string>",
          "created_at": "<string>",
          "updated_at": "<string>"
        },
        "assigned_to_group_ids": [
          "<string>"
        ],
        "priority": "high",
        "status": "open",
        "due_date": "<string>",
        "jira_issue_id": "<string>",
        "jira_issue_key": "<string>",
        "jira_issue_url": "<string>",
        "created_at": "<string>",
        "updated_at": "<string>"
      }
    }
  ],
  "links": {
    "self": "<string>",
    "first": "<string>",
    "prev": "<string>",
    "next": "<string>",
    "last": "<string>"
  }
}