### 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)

"""Update BigQuery Table Schema.
    Updates fields on a table schema based on contents of the supplied schema_fields_updates
    parameter. The supplied schema does not need to be complete, if the field
    already exists in the schema you only need to supply keys & values for the
    items you want to patch, just ensure the "name" key is set.
    .. seealso::
        For more information on how to use this operator, take a look at the guide:
        :ref:`howto/operator:BigQueryUpdateTableSchemaOperator`
    :param schema_fields_updates: a partial schema resource. see
        https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#TableSchema
        .. code-block:: python
            schema_fields_updates = [
                {"name": "emp_name", "description": "Some New Description"},
                {
                    "name": "salary",
                    "policyTags": {"names": ["some_new_policy_tag"]},
                },
                {
                    "name": "departments",
                    "fields": [
                        {"name": "name", "description": "Some New Description"},
                        {"name": "type", "description": "Some New Description"},
                    ],
                },
            ]
    :param include_policy_tags: (Optional) If set to True policy tags will be included in