Bump pmmlserver for KServe 0.15 release #182
Description
Context
As part of updating KServe to 0.15.2 we'll need to update our rocks.
https://github.com/kserve/kserve/releases/tag/v0.15.2
What needs to get done
Bump the pmmlserver rock for the v0.15.2 tag
Definition of Done
The rock is published to our registry, and can be used by our charm and/or upstream component