Update honeywell.py to read current humidity for US Thermostats (#21728)

* Update honeywell.py

Add thermostat humidity reading available in somecomfort for US thermostats.

* Update honeywell.py

* Update honeywell.py

homeassistant/components/climate/honeywell.py

@@ -273,6 +273,11 @@ class HoneywellUSThermostat(ClimateDevice):
         """Return the current temperature."""
         return self._device.current_temperature
 
+    @property
+    def current_humidity(self):
+        """Return the current humidity."""
+        return self._device.current_humidity
+
     @property
     def target_temperature(self):
         """Return the temperature we try to reach."""