/lib/udev/rules.d/85-keyboard-configuration.rules is in keyboard-configuration 1.70ubuntu8.
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 | # Set up a single virtual console.
SUBSYSTEM=="tty", KERNEL=="tty[1-6]", RUN+="console-setup-tty /dev/%k"
# Framebuffer console created. Set up the font on all virtual consoles
# again. This races with Plymouth if fbcon is built into the kernel; but
# the worst case should simply be that fonts don't get set up properly.
SUBSYSTEM=="graphics", KERNEL=="fbcon", RUN+="console-setup-tty fbcon"
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