While Goodreads is notoriously slow to update their website, a change could break the web scraping feature of the extension.
It is bad when I am notified though this only though a negative review in the chrome web store.
While it is a bit challenging to automate a test for a third-party website requiring authentication, I can try the following:
Have a github action run at a set interval
It will open Goodreads in a headless browser and do the authentication
Then it would scrape the needed web content, and compare it to saved data