Bump io.netty:netty-bom from 4.2.0.Final to 4.2.1.Final in /lang/java#3377

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

dependabot/maven/lang/java/io.netty-netty-bom-4.2.1.Finalapache/avro:dependabot/maven/lang/java/io.netty-netty-bom-4.2.1.FinalCopy head branch name to clipboard