### 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)

.. seealso::
                https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#clustering.fields
    :param impersonation_chain: Optional service account to impersonate using short-term
        credentials, or chained list of accounts required to get the access_token
        of the last account in the list, which will be impersonated in the request.
        If set as a string, the account must grant the originating account
        the Service Account Token Creator IAM role.
        If set as a sequence, the identities from the list must grant
        Service Account Token Creator IAM role to the directly preceding identity, with first
        account from the list granting this role to the originating account (templated).
    :param if_exists: What should Airflow do if the table exists. If set to `log`, the TI will be passed to
        success and an error message will be logged. Set to `ignore` to ignore the error, set to `fail` to
        fail the TI, and set to `skip` to skip it.
    :param exists_ok: Deprecated - use `if_exists="ignore"` instead.
    """
    template_fields: Sequence[str] = (
        "dataset_id",
        "table_id",
        "table_resource",
        "project_id",
        "gcs_schema_object",
        "labels",
        "view",
        "materialized_view",
        "impersonation_chain",
    )
    template_fields_renderers = {"table_resource": "json", "materialized_view": "json"}
    ui_color = BigQueryUIColors.TABLE.value
    operator_extra_links = (BigQueryTableLink(),)
    def __init__(