Destination Typesense: increase timeout and fix batch size

## Environment
- **Airbyte version**: 0.42.0
- **OS Version / Instance**: Windows 10
- **Deployment**: Docker
- **Source Connector and version**: PostgreSQL 1.0.48
- **Destination Connector and version**: Typesense 0.1.0
- **Step where error happened**: Sync job

## Current Behavior
When syncing a large dataset to Typesense the connector times out due to a low timeout config in the client's `connection_timeout_seconds` param. Currently it is set to 2 seconds in the destination.py file and should be at least 1 hour.

Also, the batch size is set to `"type": "string",` in the `spec.json` file when it should be `"type": "integer"`.

## Expected Behavior
Connector should not time out even when syncing large amounts of data.

## Logs
urllib3.exceptions.ProtocolError: ('Connection aborted.', timeout('The write operation timed out'))

## Steps to Reproduce
1. Set up an airbyte connection with typesense as destination
2. Try to sync large amounts of data (millions of records)