Has something to do with the installation of the following new packages: gcc-10-base, libgcc-s1. Based on my experience cherry picking some other package upgrades earlier in the evening, I don't currently recommend allowing the aforementioned new packages to be installed.
The following packages were automatically installed and are no longer required:
cups-browsed cups-core-drivers cups-daemon cups-ppdc cups-server-common
libgutenprint-common libgutenprint9 ssl-cert
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
cups-core-drivers cups-daemon gcc-10-base libcups2 libcups2:i386 libgcc-s1
Suggested packages:
cups cups-bsd cups-common cups-server-common cups-client
foomatic-db-compressed-ppds | foomatic-db cups-pdf smbclient
The following packages will be REMOVED:
cups cups-client printer-driver-gutenprint
The following NEW packages will be installed:
gcc-10-base libgcc-s1
The following packages will be upgraded:
cups-core-drivers cups-daemon cups-ipp-utils libcups2 libcups2:i386
5 upgraded, 2 newly installed, 3 to remove and 199 not upgraded.
Need to get 1,532 kB/1,769 kB of archives.
After this operation, 2,245 kB disk space will be freed.