Code review comment for ~bryce/ubuntu/+source/postgresql-common:fix-lp1690432-hirsute

I've verified in a privileged container that the package installs properly, however the original bug only appears in an unprivileged container. Unfortunately due to LP: #1916485 apt-get update fails when run a second time in an unprivileged container, so testing the fixed postgresql-common there doesn't seem to be feasible.