List webhook attempts

curl --request GET \
  --url https://api.exa.ai/websets/v0/webhooks/{id}/attempts \
  --header 'x-api-key: <api-key>'

{
  "data": [
    {
      "id": "<string>",
      "object": "webhook_attempt",
      "eventId": "<string>",
      "eventType": "webset.created",
      "webhookId": "<string>",
      "url": "<string>",
      "successful": true,
      "responseHeaders": {},
      "responseBody": "<string>",
      "responseStatusCode": 123,
      "attempt": 123,
      "attemptedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "hasMore": true,
  "nextCursor": "<string>"
}