Support BigQuery scopes

### What feature or improvement would you like to see?

We need to additionally specify the Google Drive API scope, if we want to access spreadsheets on Google Drive.

```
const (
// Scope is the Oauth2 scope for the service.
// For relevant BigQuery scopes, see:
// https://developers.google.com/identity/protocols/googlescopes#bigqueryv2
Scope = "https://www.googleapis.com/auth/bigquery"
)
```

https://cloud.google.com/go/docs/reference/cloud.google.com/go/bigquery/latest

The issue names no file or test; start by locating the BigQuery driver's OAuth Scope declaration shown in the example and read the linked BigQuery client documentation. Confirm the Google Drive scope is included alongside the existing BigQuery scope, then verify spreadsheet access using the project's relevant checks.

Written by the indexing model from the issue text.