**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
if key not in configuration['query']['destinationTable']:
                    raise ValueError(
                        "Not correct 'destinationTable' in "
                        "api_resource_configs. 'destinationTable' "
                        "must be a dict with {'projectId':'', "
                        "'datasetId':'', 'tableId':''}"
                    )
            configuration['query'].update(
                {
                    'allowLargeResults': allow_large_results,
                    'flattenResults': flatten_results,
                    'writeDisposition': write_disposition,
                    'createDisposition': create_disposition,
                }
            )
        if (
            'useLegacySql' in configuration['query']
            and configuration['query']['useLegacySql']
            and 'queryParameters' in configuration['query']
        ):
            raise ValueError("Query parameters are not allowed " "when using legacy SQL")
        if labels:
            _api_resource_configs_duplication_check('labels', labels, configuration)
            configuration['labels'] = labels
        if encryption_configuration:
            configuration["query"]["destinationEncryptionConfiguration"] = encryption_configuration
        job = self.insert_job(configuration=configuration, project_id=self.project_id)
        self.running_job_id = job.job_id
        return job.job_id
class BigQueryPandasConnector(GbqConnector):