List conversations

curl --request GET \
  --url https://platform.agentictrust.com/api/v1/chat/conversations \
  --header 'x-api-key: <api-key>'

{
  "conversations": [
    {
      "id": "<string>",
      "status": "ACTIVE",
      "messageCount": 123,
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "lastMessagePreview": "<string>",
      "lastMessageRole": "USER"
    }
  ]
}