**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
#
#
#
"""
This module contains Google BigQuery operators.
"""
import enum
import hashlib
import json
import re
import uuid
import warnings
from typing import Any, Dict, Iterable, List, Optional, Sequence, Set, SupportsAbs, Union
import attr
from google.api_core.exceptions import Conflict
from google.cloud.bigquery import TableReference
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator, BaseOperatorLink
from airflow.models.taskinstance import TaskInstance
from airflow.operators.check_operator import CheckOperator, IntervalCheckOperator, ValueCheckOperator
from airflow.providers.google.cloud.hooks.bigquery import BigQueryHook, BigQueryJob
from airflow.providers.google.cloud.hooks.gcs import GCSHook, _parse_gcs_url
from airflow.utils.decorators import apply_defaults
BIGQUERY_JOB_DETAILS_LINK_FMT = "https://console.cloud.google.com/bigquery?j={job_id}"
_DEPRECATION_MSG = (
    "The bigquery_conn_id parameter has been deprecated. You should pass the gcp_conn_id parameter."
)
class BigQueryUIColors(enum.Enum):