Update obs-service-recompress to version 0.5.2 / rev 20 via SR 958287
https://build.opensuse.org/request/show/958287
by user adrianSuSE + dimstar_suse
- update to version 0.5.2:
* zstd compression with rsyncable and higher compression
- disable zstd on RHEL, the package is not available on OBS