[2.4.0] Checkmk Werk 16715 created: Rest API: Improvement of response data types

[//]: # (werk v2) # Rest API: Improvement of response data types key | value ---------- | --- date | 2024-06-13T14:07:51+00:00 version | 2.4.0b1 class | fix edition | cre component | rest-api level | 1 compatible | no In order to improvide the Rest API, adjustments have been made to the data types returned in the `comments` and `downtimes` endpoints as specified below: * `Show a comment` and `Show comments` endpoints: `entry_time` now shows the date stamp in ISO 8601 format. Before: "Jun 03 2024 06:05:41" Now: "2024-03-06T06:05:41+00:00" * `Show downtime` and `Show all schedulled downtimes`. `recurring` and `is_service` fields now are boolean types. Before: `recurring`: "yes" `is_service`: "no" Now: `recurring`: true `is_service`: false