How do I sign a USB (LibUSB) driver?

Question

We have been using LibUSB Win32 driver for our product for years. We always use digicert to sign it until digicert announced last year they were not allowed to do so anymore starting April, 2021 (https://www.digicert.com/kb/code-signing/driver-signing-in-windows-using-signtool.htm).

We have no desire to modify the binary of LibUSB Win32 driver, but we do need to add new PID (VID will stay the same) to the .INF file

What is the best way to sign the driver for future release?

Thanks for any pointer!