Merge pull request #446 from Nitrokey/lpc-upd-gen-fix

Fix "generator didn't stop" update error for LPC55 devices

pynitrokey/nk3/updates.py

@@ -11,6 +11,7 @@
 import logging
 import platform
 import re
+import time
 from abc import ABC, abstractmethod
 from contextlib import contextmanager
 from io import BytesIO
@@ -324,6 +325,9 @@ def _get_bootloader(self, device: Nitrokey3Base) -> Iterator[Nitrokey3Bootloader
                     "The reboot was not confirmed with the touch button"
                 )
 
+            # needed for udev to properly handle new device
+            time.sleep(1)
+
             if platform.system() == "Darwin":
                 # Currently there is an issue with device enumeration after reboot on macOS, see
                 # <https://github.com/Nitrokey/pynitrokey/issues/145>.  To avoid this issue, we