Update pyusb requirement from ~=1.1.1 to ~=1.2.1

[dependabot[bot]]

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Updates the requirements on pyusb to permit the latest version.

Release notes

Sourced from pyusb's releases.

Version 1.2.1

Fixed:

• core: make Device hashable again (PR #376)

Commits

• 7f3638b Merge #376: core: make Device hashable again
• 2ea7896 Make Device hashable again
• f0c513c libusb0: implement is_kernel_driver_active() for Mac OS
• 5d7cb25 tests: fix legacy/hardware tests for Python 3.9
• 582226a libusb0: differentiate when usb_get_driver_np is missing
• 9bf2a03 libusb0: enable is_kernel_driver_active() to run on DragonFly BSD
• 60698d4 libusb0: implement is_kernel_driver_active() for FreeBSD
• c9cc61e libusb0: isolate Linux-specific bits of is_kernel_driver_active()
• 400787a control: fix undefined USBError
• d0272e4 docs: document branches, tags and the rolling release cycle
• Additional commits viewable in compare view

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