BibTeX does not have the right entry for preprints. This is a hack for producing the correct reference:
@Booklet{EasyChair:10604,
author = {James Curbo and Gregory Falco},
title = {A Research Agenda for Space Flight Software Security},
howpublished = {EasyChair Preprint no. 10604},
year = {EasyChair, 2023}}