[tradfri] Fix deprecations in color conversion code (#20868)

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

bundles/org.openhab.binding.tradfri/src/main/java/org/openhab/binding/tradfri/internal/TradfriColor.java

@@ -16,6 +16,7 @@ import org.eclipse.jdt.annotation.NonNullByDefault;
 import org.eclipse.jdt.annotation.Nullable;
 import org.openhab.core.library.types.HSBType;
 import org.openhab.core.library.types.PercentType;
+import org.openhab.core.util.ColorUtil;
 
 /**
  * The {@link TradfriColor} is used for conversion between color formats.
@@ -87,7 +88,7 @@ public class TradfriColor {
         float x = unnormalize(xyX);
         float y = unnormalize(xyY);
 
-        HSBType converted = HSBType.fromXY(x, y);
+        HSBType converted = ColorUtil.xyToHsb(new double[] { x, y });
 
         final Integer brightness = this.brightness;
         if (brightness == null) {