Typo in Google Cloud Storage sensor: airflow/providers/google/cloud/sensors/gcs/GCSObjectsWithPrefixExistenceSensor

The word _With_ is spelled incorrectly. It should be: GCSObjects**With**PrefixExistenceSensor

**Apache Airflow version**: 2.0.0
**Environment**:
- **Cloud provider or hardware configuration**: Google Cloud
- **OS** (e.g. from /etc/os-release): Mac OS BigSur






tests/deprecated_classes.py
),
    (
        'airflow.providers.amazon.aws.operators.sagemaker_endpoint.SageMakerEndpointOperator',
        'airflow.contrib.operators.sagemaker_endpoint_operator.SageMakerEndpointOperator',
    ),
    (
        'airflow.providers.amazon.aws.operators.sagemaker_model.SageMakerModelOperator',
        'airflow.contrib.operators.sagemaker_model_operator.SageMakerModelOperator',
    ),
    (
        'airflow.providers.amazon.aws.operators.sagemaker_training.SageMakerTrainingOperator',
        'airflow.contrib.operators.sagemaker_training_operator.SageMakerTrainingOperator',
    ),
    (
        'airflow.providers.amazon.aws.operators.sagemaker_transform.SageMakerTransformOperator',
        'airflow.contrib.operators.sagemaker_transform_operator.SageMakerTransformOperator',
    ),
    (
        'airflow.providers.amazon.aws.operators.sagemaker_tuning.SageMakerTuningOperator',
        'airflow.contrib.operators.sagemaker_tuning_operator.SageMakerTuningOperator',
    ),
    (
        'airflow.providers.docker.operators.docker_swarm.DockerSwarmOperator',
        'airflow.contrib.operators.docker_swarm_operator.DockerSwarmOperator',
    ),
    (
        'airflow.providers.cncf.kubernetes.operators.kubernetes_pod.KubernetesPodOperator',
        'airflow.contrib.operators.kubernetes_pod_operator.KubernetesPodOperator',
    ),
    (