[2.3.0] Checkmk Werk 16369 created: downtimes: Added service_description field to services downtimes

[//]: # (werk v2) # downtimes: Added service_description field to services downtimes key | value ---------- | --- date | 2024-02-20T14:52:12+00:00 version | 2.3.0b1 class | feature edition | cre component | rest-api level | 1 compatible | yes When querying downtimes through the "show all downtimes" endpoint, the service_description field for service downtimes was not included. This werk introduces this field, which is not present in the host downtimes.