fix: UART passthrough

Author: AsCress

pslab/sciencelab.py

@@ -284,7 +284,7 @@ def enable_uart_passthrough(self, baudrate: int):
         baudrate : int
             Baudrate of the UART2 bus.
         """
-        if self.firmware.major < 3:
+        if self.device.firmware.major < 3:
             self._uart_passthrough_legacy(baudrate)
         else:
             self._uart_passthrough(baudrate)