Logging error when running Python Updater in verbose == True mode

[KevinSchwarzer]

I ran into an error in diagnostic_updater/diagnostic_updater/_diagnostic_updater.py when setting Updater.verbose to True. I get the following error.

Traceback (most recent call last):
File "/workspaces/humble/install/argos_supervisor_py/lib/argos_supervisor_py/supervisor", line 33, in <module>
  sys.exit(load_entry_point('argos-supervisor-py', 'console_scripts', 'supervisor')())
File "/workspaces/humble/build/argos_supervisor_py/argos_supervisor_py/supervisor_node.py", line 280, in main
  executor.spin()
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/executors.py", line 279, in spin
  self.spin_once()
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/executors.py", line 764, in spin_once
  self._spin_once_impl(timeout_sec)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/executors.py", line 761, in _spin_once_impl
  future.result()
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/task.py", line 94, in result
  raise self.exception()
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/task.py", line 239, in __call__
  self._handler.send(None)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/executors.py", line 418, in handler
  await call_coroutine(entity, arg)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/executors.py", line 332, in _execute_timer
  await await_or_execute(tmr.callback)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rclpy/executors.py", line 107, in await_or_execute
  return callback(*args)
File "/workspaces/humble/install/diagnostic_updater/local/lib/python3.10/dist-packages/diagnostic_updater/_diagnostic_updater.py", line 279, in update
  'Non-zero diagnostic status. Name: %s, status\
TypeError: %i format: a real number is required, not bytes

The issue is within the following lines.

diagnostics/diagnostic_updater/diagnostic_updater/_diagnostic_updater.py

Lines 278 to 281 in c8941bb

	self.node.get_logger().warn(
	'Non-zero diagnostic status. Name: %s, status\
	%i: %s' % (status.name, status.level,
	status.message))

Because status.level is a byte, but %i requires a number. Explicitly converting the byte to a string and using %s would fix this issue.

I'm more than happy to open a PR with these changes 😄

[ct2034]

Thanks for reporting this and for the pr :)