Convert sensor_schema to use kwargs (#2094)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/max6675/sensor.py

@@ -4,7 +4,6 @@ from esphome.components import sensor, spi
 from esphome.const import (
     CONF_ID,
     DEVICE_CLASS_TEMPERATURE,
-    ICON_EMPTY,
     STATE_CLASS_MEASUREMENT,
     UNIT_CELSIUS,
 )
@@ -16,7 +15,10 @@ MAX6675Sensor = max6675_ns.class_(
 
 CONFIG_SCHEMA = (
     sensor.sensor_schema(
-        UNIT_CELSIUS, ICON_EMPTY, 1, DEVICE_CLASS_TEMPERATURE, STATE_CLASS_MEASUREMENT
+        unit_of_measurement=UNIT_CELSIUS,
+        accuracy_decimals=1,
+        device_class=DEVICE_CLASS_TEMPERATURE,
+        state_class=STATE_CLASS_MEASUREMENT,
     )
     .extend(
         {