Fix/suppress PMD CompareObjectsWithEquals findings (#11476)

Newer PMD versions discover more CompareObjectsWithEquals findings.

Related to https://github.com/openhab/static-code-analysis/pull/423

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

bundles/org.openhab.binding.comfoair/src/main/java/org/openhab/binding/comfoair/internal/ComfoAirCommandType.java

@@ -786,6 +786,7 @@ public enum ComfoAirCommandType {
      *            new state
      * @return initialized ComfoAirCommand
      */
+    @SuppressWarnings("PMD.CompareObjectsWithEquals")
     public static @Nullable ComfoAirCommand getChangeCommand(String key, Command command) {
         ComfoAirCommandType commandType = getCommandTypeByKey(key);
         State value = UnDefType.NULL;