/lib/udev/rules.d/99-gpusb.rules is in libindi-data 0.9.7-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | SUBSYSTEMS=="usb", ATTRS{idVendor}=="134a", ATTRS{idProduct}=="9020", MODE="0666"
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