**Apache Airflow version**: 1.10.*
**BackPort Packages version**: 2020.10.5rc1

**What happened**:

`BigQueryInsertJobOperator` tries to start a BigQuery job by specifying a job_id which is a combination of `dag_id`, `task_id`, `execution_date` and an additional `uniqueness_suffix`.

https://github.com/apache/airflow/blob/master/airflow/providers/google/cloud/operators/bigquery.py#L2072

However, because BigQuery only accepts alphanumeric (in additon to dashes and underscore) characters then, if a DagID contains a version number whcih includes a `.` character then this will cause the task to fail.

https://cloud.google.com/bigquery/docs/running-jobs#generate-jobid

**How to reproduce it**:
Create a DAG with the name `my-dag-v1.0`.
airflow/providers/google/cloud/hooks/bigquery.py
"""
        Executes a BigQuery extract command to copy data from BigQuery to
        Google Cloud Storage. See here:
        https://cloud.google.com/bigquery/docs/reference/v2/jobs
        For more details about these parameters.
        :param source_project_dataset_table: The dotted ``<dataset>.<table>``
            BigQuery table to use as the source data.
        :type source_project_dataset_table: str
        :param destination_cloud_storage_uris: The destination Google Cloud
            Storage URI (e.g. gs://some-bucket/some-file.txt). Follows
            convention defined here:
            https://cloud.google.com/bigquery/exporting-data-from-bigquery#exportingmultiple
        :type destination_cloud_storage_uris: list
        :param compression: Type of compression to use.
        :type compression: str
        :param export_format: File format to export.
        :type export_format: str
        :param field_delimiter: The delimiter to use when extracting to a CSV.
        :type field_delimiter: str
        :param print_header: Whether to print a header for a CSV file extract.
        :type print_header: bool
        :param labels: a dictionary containing labels for the job/query,
            passed to BigQuery
        :type labels: dict
        """
        warnings.warn(
            "This method is deprecated. Please use `BigQueryHook.insert_job` method.", DeprecationWarning
        )
        if not self.project_id:
            raise ValueError("The project_id should be set")