Why has coverage been locked to `==4.0.3` for two years? Why not `>=4.0.0`?

If I add localstack to my pipenv, I can't lock because of this unnecessary dependency.
PartitionKey='testId',
        StreamName=TEST_STREAM_NAME
    )
    time.sleep(3)
    
    all_objects = testutil.list_all_s3_objects()
    testutil.assert_objects(json.loads(to_str(test_data)), all_objects)
def test_kinesis_lambda_sns_ddb_sqs_streams():
    ddb_lease_table_suffix = '-kclapp'
    dynamodb = aws_stack.connect_to_resource('dynamodb')
    dynamodb_service = aws_stack.connect_to_service('dynamodb')
    dynamodbstreams = aws_stack.connect_to_service('dynamodbstreams')
    kinesis = aws_stack.connect_to_service('kinesis')
    sns = aws_stack.connect_to_service('sns')
    sqs = aws_stack.connect_to_service('sqs')
    LOGGER.info('Creating test streams...')
    run_safe(lambda: dynamodb_service.delete_table(
        TableName=TEST_STREAM_NAME + ddb_lease_table_suffix), print_error=False)
    aws_stack.create_kinesis_stream(TEST_STREAM_NAME, delete=True)
    aws_stack.create_kinesis_stream(TEST_LAMBDA_SOURCE_STREAM_NAME)
    
    def process_records(records, shard_id):
        EVENTS.extend(records)
    
    kinesis_connector.listen_to_kinesis(TEST_STREAM_NAME, listener_func=process_records,
        wait_until_started=True, ddb_lease_table_suffix=ddb_lease_table_suffix)
    LOGGER.info('Kinesis consumer initialized.')
    
    testutil.create_dynamodb_table(TEST_TABLE_NAME, partition_key=PARTITION_KEY,
        stream_view_type='NEW_AND_OLD_IMAGES')