**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
quote_character: Optional[str] = None,
        ignore_unknown_values: bool = False,
        allow_quoted_newlines: bool = False,
        allow_jagged_rows: bool = False,
        encoding: str = "UTF-8",
        schema_update_options: Optional[Iterable] = None,
        src_fmt_configs: Optional[Dict] = None,
        time_partitioning: Optional[Dict] = None,
        cluster_fields: Optional[List] = None,
        autodetect: bool = False,
        encryption_configuration: Optional[Dict] = None,
    ) -> str:
        """
        Executes a BigQuery load command to load data from Google Cloud Storage
        to BigQuery. See here:
        https://cloud.google.com/bigquery/docs/reference/v2/jobs
        For more details about these parameters.
        :param destination_project_dataset_table:
            The dotted ``(<project>.|<project>:)<dataset>.<table>($<partition>)`` BigQuery
            table to load data into. If ``<project>`` is not included, project will be the
            project defined in the connection json. If a partition is specified the
            operator will automatically append the data, create a new partition or create
            a new DAY partitioned table.
        :type destination_project_dataset_table: str
        :param schema_fields: The schema field list as defined here:
            https://cloud.google.com/bigquery/docs/reference/v2/jobs#configuration.load
            Required if autodetect=False; optional if autodetect=True.
        :type schema_fields: list
        :param autodetect: Attempt to autodetect the schema for CSV and JSON
            source files.