klippy: Replace deprecated logger.warn with logger.warning (#6385)

Replace deprecated logger.warn with logger.warning

logger.warn will be removed in Python 3.13

Signed-off-by: Thijs Triemstra <info@collab.nl>

klippy/extras/adc_temperature.py

@@ -95,8 +95,8 @@ class LinearVoltage:
         for temp, volt in params:
             adc = (volt - voltage_offset) / adc_voltage
             if adc < 0. or adc > 1.:
-                logging.warn("Ignoring adc sample %.3f/%.3f in heater %s",
-                             temp, volt, config.get_name())
+                logging.warning("Ignoring adc sample %.3f/%.3f in heater %s",
+                                temp, volt, config.get_name())
                 continue
             samples.append((adc, temp))
         try: