### Description

There might be an use case where the export_format can be based on some dynamic values. So, adding export_format will help developers in future

### Use case/motivation

_No response_

### Related issues

_No response_

### Are you willing to submit a PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

self.log.info(
            "Executing extract of %s into: %s",
            self.source_project_dataset_table,
            self.destination_cloud_storage_uris,
        )
        hook = BigQueryHook(
            gcp_conn_id=self.gcp_conn_id,
            delegate_to=self.delegate_to,
            location=self.location,
            impersonation_chain=self.impersonation_chain,
        )
        self.hook = hook
        configuration = self._prepare_configuration()
        job_id = hook.generate_job_id(
            job_id=self.job_id,
            dag_id=self.dag_id,
            task_id=self.task_id,