Update datasets to 2.14.4

[albertvillanova]

Update datasets to 2.14.4: https://github.com/huggingface/datasets/releases/tag/2.14.4

Fix authentication issues by @albertvillanova in huggingface/datasets#6127

We will be able to remove some authentication tweaks, where we had to use download_config instead of token. See:

• Fix authentication with DownloadConfig #1620