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.hooks.translate.CloudTranslateHook",
        "airflow.contrib.hooks.gcp_translate_hook.CloudTranslateHook",
    ),
    (
        "airflow.providers.google.cloud.hooks.video_intelligence.CloudVideoIntelligenceHook",
        "airflow.contrib.hooks.gcp_video_intelligence_hook.CloudVideoIntelligenceHook",
    ),
    (
        "airflow.providers.google.cloud.hooks.vision.CloudVisionHook",
        "airflow.contrib.hooks.gcp_vision_hook.CloudVisionHook",
    ),
    (
        "airflow.providers.google.cloud.hooks.bigquery.BigQueryHook",
        "airflow.contrib.hooks.bigquery_hook.BigQueryHook",
    ),
    (
        "airflow.providers.amazon.aws.hooks.athena.AWSAthenaHook",
        "airflow.contrib.hooks.aws_athena_hook.AWSAthenaHook",
    ),
    (
        "airflow.providers.amazon.aws.hooks.datasync.AWSDataSyncHook",
        "airflow.contrib.hooks.aws_datasync_hook.AWSDataSyncHook",
    ),
    (
        "airflow.providers.amazon.aws.hooks.s3.S3Hook",
        "airflow.hooks.S3_hook.S3Hook",
    ),
    (