increase sleep RK1 flashing

https://git.debu.gs/gitweb/?p=bmcd;a=commitdiff;h=b92a7a31a81a0fd34869be6b3caac94424328bfc
code, git.debu.gs | 2024-01-29 10:57:37 +0000 GMT | No.1461 
increase sleep RK1 flashing

* increased the waiting time for the RK1 to announce itself on the USB
subsystem.
* small typo's and update of dependencies
  • [DH] Cargo.lock
  • [DH] Cargo.toml
  • [DH] src/app/upgrade_worker.rs
  • [DH] src/persistency/app_persistency.rs
  • [DH] src/serial_service/serial_handler.rs
  • [DH] src/usb_boot/rockusb.rs