### Apache Airflow version

Other Airflow 2 version (please specify below)

### What happened

Airflow version: 2.5.3
Description: While using BigQueryCreateExternalTableOperator, when we to create external table on top of parquet files located in GCS, airflow shows below error:
google.api_core.exceptions.BadRequest: 400 POST ... failed. CsvOptions can only be specified if storage format is CSV.

No csvOptions are mentioned while passing the source_format as Parquet. There seems to be an issue with bigquery.py hook.

### What you think should happen instead

_No response_

### How to reproduce

While using BigQueryCreateExternalTableOperator, try to create external table on top of parquet files located in GCS. Sample usage:
`create_external_table = BigQueryCreateExternalTableOperator(
    task_id="create_external_table",
    destination_project_dataset_table="table_name",
    bucket=GCS_BUCKET_NAME,
    source_objects=[<list of URIs of parquet files>],
    source_format="PARQUET",
    autodetect=True,
    gcp_conn_id="gcp_conn_id",
    google_cloud_storage_conn_id="test_conn_id",
)`

### Operating System

-

### Versions of Apache Airflow Providers

_No response_

### Deployment

Official Apache Airflow Helm Chart

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] 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)

BigQueryColumnCheckOperator,
    BigQueryConsoleIndexableLink,
    BigQueryConsoleLink,
    BigQueryCreateEmptyDatasetOperator,
    BigQueryCreateEmptyTableOperator,
    BigQueryCreateExternalTableOperator,
    BigQueryDeleteDatasetOperator,
    BigQueryDeleteTableOperator,
    BigQueryExecuteQueryOperator,
    BigQueryGetDataOperator,
    BigQueryGetDatasetOperator,
    BigQueryGetDatasetTablesOperator,
    BigQueryInsertJobOperator,
    BigQueryIntervalCheckOperator,
    BigQueryPatchDatasetOperator,
    BigQueryUpdateDatasetOperator,
    BigQueryUpdateTableOperator,
    BigQueryUpdateTableSchemaOperator,
    BigQueryUpsertTableOperator,
    BigQueryValueCheckOperator,
)
from airflow.providers.google.cloud.triggers.bigquery import (
    BigQueryCheckTrigger,
    BigQueryGetDataTrigger,
    BigQueryInsertJobTrigger,
    BigQueryIntervalCheckTrigger,
    BigQueryValueCheckTrigger,
)
from airflow.serialization.serialized_objects import SerializedDAG
from airflow.utils.timezone import datetime