AttributeError: 'DownloadConfig' object has no attribute 'storage_options'

From https://github.com/obss/jury/issues/125

`evaluate` passes its own DownloadConfig (evaluate.utils.file_utils.DownloadConfig) to a `datasets` `DownloadManager` in `EvaluationModule.download_and_prepare`.

However it should actually pass a `datasets` DownloadConfig (datasets.download.DownloadConfig) instead to not miss any new attribute (it happened in the latest `datasets` 2.11)