Re-enable grouping for ENA
Re-enable grouping for ENA

We do need to group ENA files so we have a normal amount of jobs, but we
need smaller chunks. Hopefully this limit is more reasonable.

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline