Revert RMB 32.0.0 due to RMB bugs.

Purpose/Overview:
Initial-load request cannot be processed after RMB update since there is a bug that breaks the connection between inventory-storage and oai-pmh after some time. A small number of instances can be processed normally, but when a request started to take more than half of a minute approximately the problems comes up.
Approach:
Revert RMB 32.0.0 update
Acceptance criteria:

• RMB reverted
• Initial-load with a significant amount of data doesn't return 500 and instances are processed normally.