Update custom SSL cert expiration date when SSL files change in the cert directory

Is your feature request related to a problem? Please describe.
Currently I'm generating SSL certs outside of NPM. I'm able to use a script to copy the certs into the custom cert folder inside of NPM on a cron/schedule. The issue is after the custom SSL cert is initially created, if I update the SSL files in the cert folder the date within the UI does not update.

Describe the solution you'd like
The simplest solution I can think of is to watch the cert folder for changes and if it is updated then write a new date from the SSL cert into the database and update the date in the UI.

Describe alternatives you've considered
I can't think of any other alternatives other than manually creating a new custom cert everytime it's about to expire - not a reasonable solution by any means.

Additional context
My SSL cert is by ZeroSSL.

Start by locating the custom certificate storage and the code that reads its expiration date for the UI. Trace how certificate files are replaced, how the expiration is stored in the database, and how the UI displays it; done means replacing files in the custom certificate directory updates the stored expiration and displayed date.