externals: update libusb to c060e9ce30ac2e3ffb49d94209c4dae77b6642f7 ...

... this fixes an issue when compiling with newer MSVC

externals/libusb/libusb

@@ -1 +1 @@
-Subproject commit 4239bc3a50014b8e6a5a2a59df1fff3b7469543b
+Subproject commit c060e9ce30ac2e3ffb49d94209c4dae77b6642f7