Open-service-broker references commons-collections 3.x legacy class

Hi Team ,             
             spring-cloud-open-service-broker-core references
             org.apache.commons.collections.CollectionUtils from commons-collections 3.x at runtime.
             The latest checked Spring Cloud Open Service Broker version (5.0.0) still uses this
             legacy class. 

Can you please share any plan to upgrade to commons-collections4 ?