/usr/share/cups/ppd-updaters/foomatic-db is in foomatic-db 20180306-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | DRIVER_REGEXP='^foomatic:'
GENNICKNAME_REGEXP='s/Foomatic\/hpijs-\w+\b/Foomatic\/hpijs/'
|