Bump netty from 4.2.6.Final to 4.2.9.Final#3951

dependabot[bot] wants to merge 1 commit intomainapache/solr:mainfrom

dependabot/gradle/netty-4.2.9.Finalapache/solr:dependabot/gradle/netty-4.2.9.FinalCopy head branch name to clipboard