Fix support for Solr 8.x builds that require metrics-*.jar files in server library path.
update Kotlin to 1.3.72
update Undertow to 1.4.28.Final
update Solr testing to 8.5.2
Fix support for Solr 8.x builds that require metrics-*.jar files in server library path.
update Kotlin to 1.3.72
update Undertow to 1.4.28.Final
update Solr testing to 8.5.2