upgrade minor versions of pillow and gradio
fixes #2334

I also upgrade gradio in front/admin-ui (minor version), already deployed on https://huggingface.co/spaces/datasets-maintainers/datasets-server-admin-ui
upgrade minor versions of pillow and gradio: fixes #2334

I also upgrade gradio in front/admin-ui (minor version), already deployed on https://huggingface.co/spaces/datasets-maintainers/datasets-server-admin-ui