win32: Switch to 64-bit Cygwin and update to latest 2711/2712 firmware

* Update for the latest firmware
* Remove the redundant 32-bit mass-storage gadget
* Switch to 64-bit Cygwin

20221215~105525 release

20221104~153421 release

20221104~153421 release

20220815~145439 release

20220804~165403 release

20220718~085937 release

20220718~085937 release

20220708~133956 release

20220504~214218 release