✅ Memory leak issue in Renci.ssh version (2020)

public IEnumerable<FileTransferInfoModel> GetFiles(string serverLocation)
{
    var files = new List<FileTransferInfoModel>();
    _retryPolicy.Execute(() =>
    {
        using var client = new SftpClient(_connectionInfo);
        client.Connect();
        var ftpfiles = client.ListDirectory(serverLocation);
        files = ftpfiles.Where(_ => !_.IsDirectory).Select(_ => new FileTransferInfoModel
        {
            ClearingHouseFileName = _.Name,
            DateCreated = _.LastWriteTimeUtc.ToString(),
            FileSize = _.Length
        }).ToList();
    });
    return files;
}