The game (OOTP24) apparently has and used the 2022 schedule which appears to follow the same format. The file is "dominican_rookie_league_r_c_2022.lsdl" down in the "default_data/schedule_file_templates.zip/schedules". So there is something that follows that format.
As far as getting the real deal for 2023, I found this page online:
https://www.milb.com/dominican-summe...minican-summer. But it would be a chore to download the individual days and parse everything into a schedule file plus matchup the team ids so that the matchups are correct.
For those reasons I cannot really see myself putting the effort into compiling it. Maybe someone else more eager to take on the presumably scripting challenge would do it. Or a compelling case could be made that it is worth the effort.