Added new Reports API to get chat transcripts. Added new webhook events for ticket types, exhibitors, speakers, and tickets. Added new cancel_message field to Zoom Events API.

New report endpoint and webhook events for event details


## Added

New **Reports** API:

- `GET /v2/zoom_events/events/{eventId}/reports/chat_transcripts`

New **Ticket Types** Webhook event:

- `zoom_events.ticket_type_updated`
- `zoom_events.ticket_type_created`
- `zoom_events.ticket_type_deleted`

New **Exhibitors** Webhook event:

- `zoom_events.exhibitor_created`
- `zoom_events.exhibitor_updated`
- `zoom_events.exhibitor_deleted`

New **Speakers** Webhook event:

- `zoom_events.speaker_created`
- `zoom_events.speaker_updated`
- `zoom_events.speaker_deleted`

New **Tickets** Webhook event:

- `zoom_events.ticket_updated`

## Enhancements

New `cancel_message` request field in the following **Events** API:

- `POST /v2/zoom_events/events/{eventId}/event_actions`
