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.spanner.SpannerDeployDatabaseInstanceOperator",
        "airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseDeployOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.spanner.SpannerQueryDatabaseInstanceOperator",
        "airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseQueryOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.spanner.SpannerUpdateDatabaseInstanceOperator",
        "airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseUpdateOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.spanner.SpannerDeleteInstanceOperator",
        "airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDeleteOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.spanner.SpannerDeployInstanceOperator",
        "airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDeployOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service"
        ".CloudDataTransferServiceCreateJobOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceJobCreateOperator",
    ),
    (
        "airflow.providers.google.cloud.operators.cloud_storage_transfer_service"
        ".CloudDataTransferServiceDeleteJobOperator",
        "airflow.contrib.operators.gcp_transfer_operator.GcpTransferServiceJobDeleteOperator",