chore: fix test warning

[cdce8p]

tests/devices/test_v1_channel.py::test_v1_channel_command_encoding_validation
  /.../python-roborock/roborock/devices/v1_channel.py:233:
      RuntimeWarning: coroutine 'AsyncMockMixin._execute_mock_call' was never awaited
    self._local_channel.close()

Close is a normal function, not async.

python-roborock/roborock/devices/local_channel.py

Lines 73 to 80 in e9ba1e3

	def close(self) -> None:
	"""Disconnect from the device."""
	if self._transport:
	self._transport.close()
	else:
	_LOGGER.warning("Close called but transport is already None")
	self._transport = None
	self._is_connected = False

[cdce8p]

/CC @allenporter

[Lash-L]

Tests seem to be failing

Test fixed

[allenporter]

Thank you!