Loading multiple entity revisions together causes memory exhaustion

Problem/Motivation

I receive the following error when there are multiple items in queue to remove composite revisions that are no longer used.

PHP Fatal error: Allowed memory size of ********* bytes exhausted

Steps to reproduce

When there are multiple items in queue to remove composite revisions run "drush cron"

Proposed resolution

In /entity_reference_revisions/src/Plugin/QueueWorker/OrphanPurger.php instead of loading multiple revisions together, iterate over $entity_revision_ids array and load entity revision one by one inside foreach loop.