### Body

Use `AirflowProviderDeprecationWarning` as warning source in EMR operators and change stacklevel to 2:
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L380-L384
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L373-L377
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L264-L268
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L257-L261

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
"""
    Operator to start EMR Serverless job.
    .. seealso::
        For more information on how to use this operator, take a look at the guide:
        :ref:`howto/operator:EmrServerlessStartJobOperator`
    :param application_id: ID of the EMR Serverless application to start.
    :param execution_role_arn: ARN of role to perform action.
    :param job_driver: Driver that the job runs on.
    :param configuration_overrides: Configuration specifications to override existing configurations.
    :param client_request_token: The client idempotency token of the application to create.