Loki curator container memory usage starts to gradual increase until is OOMKiled.

[vlvasilev]

What happened:
After continuous work, the Loki curator container memory usage starts to gradual increase.
There is no trace of garbage collection triggering until reaching the memory limit but after time the container is OOMKilled.

What you expected to happen:
I am expecting the Loki curator container memory usage to be nearly constant with spikes only when the deletion of files is triggered.

How to reproduce it (as minimally and precisely as possible):
Currently, this issue is present in all landscapes mainly for the central Loki pod.

Anything else we need to know:

Environment: