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_sql.CloudSQLDeleteInstanceDatabaseOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlInstanceDatabaseDeleteOperator',
    ),
    (
        'airflow.providers.google.cloud.operators.cloud_sql.CloudSQLDeleteInstanceOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlInstanceDeleteOperator',
    ),
    (
        'airflow.providers.google.cloud.operators.cloud_sql.CloudSQLExecuteQueryOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlQueryOperator',
    ),
    (
        'airflow.providers.google.cloud.operators.cloud_sql.CloudSQLExportInstanceOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlInstanceExportOperator',
    ),
    (
        'airflow.providers.google.cloud.operators.cloud_sql.CloudSQLImportInstanceOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlInstanceImportOperator',
    ),
    (
        'airflow.providers.google.cloud.operators.cloud_sql.CloudSQLInstancePatchOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlInstancePatchOperator',
    ),
    (
        'airflow.providers.google.cloud.operators.cloud_sql.CloudSQLPatchInstanceDatabaseOperator',
        'airflow.contrib.operators.gcp_sql_operator.CloudSqlInstanceDatabasePatchOperator',
    ),
    (
        'airflow.providers.jira.operators.jira.JiraOperator',
        'airflow.contrib.operators.jira_operator.JiraOperator',