we are using the ZCM 11.2 appliance with ZCM 11.2.3

we are planing to update to ZCM 11.3 and i'm not sure if it is necessary to upgrade the appliance to 11.3 (like described in the documentation, install appliance 11.3 and then migrate data from 11.2 appliance to 11.3 appliance). Or can i upgrade ZCM from 11.2.3 to 11.3 on the ZCM 11.2 appliance?

Is it possible and if yes, what is the best way - the upgrade to 11.3 appliance or use the 11.2 appliance with zcm 11.3?

Greeting and thanks!