Add date to full risk data csv

**Description:** For the Hub Monitoring scripts, we are making an updated version of the full risk data csv every few years to look for changes in risk, which include the date in the filename. Include the date when first making the full risk data csv as well, so it is clearer which file is the most recent. The new naming convention would be accession_number_full_risk_data_YYYY-MM-DD.csv. 
