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
]
TRANSFERS = [
    (
        "airflow.providers.google.cloud.transfers.local_to_gcs.LocalFilesystemToGCSOperator",
        "airflow.contrib.operators.file_to_gcs.FileToGoogleCloudStorageOperator",
    ),
    (
        "airflow.providers.google.cloud.transfers.adls_to_gcs.ADLSToGCSOperator",
        "airflow.contrib.operators.adls_to_gcs.AdlsToGoogleCloudStorageOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service."
        "CloudDataTransferServiceGCSToGCSOperator",
        "airflow.contrib.operators.gcp_transfer_operator."
        "GoogleCloudStorageToGoogleCloudStorageTransferOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.vision.CloudVisionAddProductToProductSetOperator",
        "airflow.contrib.operators.gcp_vision_operator.CloudVisionAddProductToProductSetOperator",
    ),
    (
        "airflow.providers.google.cloud.transfers.gcs_to_bigquery.GCSToBigQueryOperator",
        "airflow.contrib.operators.gcs_to_bq.GoogleCloudStorageToBigQueryOperator",
    ),
    (
        "airflow.providers.google.cloud.transfers.gcs_to_gcs.GCSToGCSOperator",
        "airflow.contrib.operators.gcs_to_gcs.GoogleCloudStorageToGoogleCloudStorageOperator",
    ),
    (
        "airflow.providers.amazon.aws.transfers.gcs_to_s3.GCSToS3Operator",