It is probably somehow related to this bug: https://bugs.launchpad.net/ubuntu/+source/libffi/+bug/1943312
A slight modification of the proposed workaround in the bugreport mentioned above worked in my case:
apt download libffi8 libffi8:i386 for d in libffi8*.deb; do dpkg-deb -x $d $d.dir; dpkg-deb -e $d $d.dir/DEBIAN; sed -i '/Breaks: libffi8ubuntu1/d' $d.dir/DEBIAN/control; sed -i '/Replaces: libffi8ubuntu1/d' $d.dir/DEBIAN/control; sed -i '/Provides: libffi8ubuntu1 .*/d' $d.dir/DEBIAN/control; dpkg-deb -b $d.dir $d; done sudo dpkg -i libffi8*.deb
