**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/operators/bigquery.py
"""
    Fetches the data from a BigQuery table (alternatively fetch data for selected columns)
    and returns data in a python list. The number of elements in the returned list will
    be equal to the number of rows fetched. Each element in the list will again be a list
    where element would represent the columns values for that row.
    **Example Result**: ``[['Tony', '10'], ['Mike', '20'], ['Steve', '15']]``
    .. seealso::
        For more information on how to use this operator, take a look at the guide:
        :ref:`howto/operator:BigQueryGetDataOperator`
    .. note::
        If you pass fields to ``selected_fields`` which are in different order than the
        order of columns already in
        BQ table, the data will still be in the order of BQ table.
        For example if the BQ table has 3 columns as
        ``[A,B,C]`` and you pass 'B,A' in the ``selected_fields``
        the data would still be of the form ``'A,B'``.
    **Example**: ::
        get_data = BigQueryGetDataOperator(
            task_id='get_data_from_bq',
            dataset_id='test_dataset',
            table_id='Transaction_partitions',
            max_results=100,
            selected_fields='DATE',
            gcp_conn_id='airflow-conn-id'
        )
    :param dataset_id: The dataset ID of the requested table. (templated)