I told you that I would keep you informed if there are supplemental updates for Mac OS 10.15 (aka Catalina). Of course, you are still holding off on the big upgrade to Mac OS 11 — Big Sur. Unfortunately, Apple is not going to notify you when updates are released for those staying with 10.15.
One came out last week. Please download and install it. Depending on the speed of your internet connection, I would expect this process to take 30 to 45 minutes (but could be less).