/etc/apparmor.d/usr.sbin.cups-browsed is in cups-browsed 1.20.2-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | #include <tunables/global>
/usr/sbin/cups-browsed flags=(attach_disconnected) {
  #include <abstractions/base>
  #include <abstractions/nameservice>
  #include <abstractions/cups-client>
  #include <abstractions/dbus>
  #include <abstractions/p11-kit>
  /etc/cups/cups-browsed.conf r,
  /etc/cups/lpoptions r,
  /etc/cups/ppd/* r,
  /{var/,}run/cups/certs/* r,
  /var/cache/cups/* rw,
  /var/log/cups/* rw,
  /tmp/** rw,
  # Site-specific additions and overrides. See local/README for details.
  #include <local/usr.sbin.cups-browsed>
}
 |