Reverse dependencies for libusb

Latest version of the following gems require libusb

Gem	Version	Date	Downloads
bstick +3.72 Thousand Downloads	`0.2.0` September 29, 2016	September 29, 2016	3.72 Thousand
BlikstickSquare +3.43 Thousand Downloads	`0.1.0` April 10, 2017	April 10, 2017	3.43 Thousand
uvc +2.89 Thousand Downloads	`0.1.0` November 13, 2019	November 13, 2019	2.89 Thousand
ksr10 +2.62 Thousand Downloads	`1.0.0` January 07, 2020	January 07, 2020	2.62 Thousand