You can upgrade Quartz by running yarn quartz:upgrade. This script will try and merge any updates to Quartz’s v4 branch into the local copy.
Note this may cause merge conflicts. If so, those will have to be resolved manually through your text editor of choice.
Reducing merge conflicts is the very reason the config.ts Integration Configuration file was added to this project. This keeps all of your changes in a separate file for easy reference and minimizes changes to quartz.config.ts.
Instructions for re-implementing the Quartz customizations can be found here