Add truncated events to WebhookTriggers enum

[huynhtuandat05december]

Describe the bug
WebhookTriggers in https://github.com/nylas/nylas-nodejs/blob/main/src/models/webhooks.ts is missing message.created.truncated and message.updated.truncated events

To Reproduce

Expected behavior

export enum WebhookTriggers {
  ...
  // Message triggers
  MessageCreated = 'message.created',
  MessageUpdated = 'message.updated',
  MessageCreatedTruncated = 'message.created.truncated', // edit in here
  MessageUpdatedTruncated = 'message.updated.truncated',  // edit in here
  ...
}

SDK Version:
v8.0.5

Additional context