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.google.cloud.operators.cloud_storage_transfer_service"
        ".CloudDataTransferServiceUpdateJobOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceJobUpdateOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service."
        "CloudDataTransferServiceCancelOperationOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceOperationCancelOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service."
        "CloudDataTransferServiceGetOperationOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceOperationGetOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service."
        "CloudDataTransferServicePauseOperationOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceOperationPauseOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service."
        "CloudDataTransferServiceResumeOperationOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceOperationResumeOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service."
        "CloudDataTransferServiceListOperationsOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceOperationsListOperator",