**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
)
            gcp_conn_id = bigquery_conn_id
        warnings.warn(
            "This operator is deprecated. Please use `BigQueryInsertJobOperator`.",
            DeprecationWarning,
        )
        self.sql = sql
        self.destination_dataset_table = destination_dataset_table
        self.write_disposition = write_disposition
        self.create_disposition = create_disposition
        self.allow_large_results = allow_large_results
        self.flatten_results = flatten_results
        self.gcp_conn_id = gcp_conn_id
        self.delegate_to = delegate_to
        self.udf_config = udf_config
        self.use_legacy_sql = use_legacy_sql
        self.maximum_billing_tier = maximum_billing_tier
        self.maximum_bytes_billed = maximum_bytes_billed
        self.schema_update_options = schema_update_options
        self.query_params = query_params
        self.labels = labels
        self.priority = priority
        self.time_partitioning = time_partitioning
        self.api_resource_configs = api_resource_configs
        self.cluster_fields = cluster_fields
        self.location = location
        self.encryption_configuration = encryption_configuration
        self.hook = None  
        self.impersonation_chain = impersonation_chain
    def execute(self, context):