Fix Java and Jetty deprecations (#10349)

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.gree/src/main/java/org/openhab/binding/gree/internal/handler/GreeHandler.java

@@ -16,6 +16,7 @@ import static org.openhab.binding.gree.internal.GreeBindingConstants.*;
 
 import java.io.IOException;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.net.DatagramSocket;
 import java.time.Instant;
 import java.util.List;
@@ -567,7 +568,7 @@ public class GreeHandler extends BaseThingHandler {
 
     public static QuantityType<?> toQuantityType(Number value, int digits, Unit<?> unit) {
         BigDecimal bd = new BigDecimal(value.doubleValue());
-        return new QuantityType<>(bd.setScale(digits, BigDecimal.ROUND_HALF_EVEN), unit);
+        return new QuantityType<>(bd.setScale(digits, RoundingMode.HALF_EVEN), unit);
     }
 
     private void stopRefreshTask() {