Bump netty-all from 4.1.1.Final to 4.1.42.Final in /async-program-demo/Chapter8#1

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dependabot/maven/async-program-demo/Chapter8/io.netty-netty-all-4.1.42.Finalzhailuxu/async-program-demo:dependabot/maven/async-program-demo/Chapter8/io.netty-netty-all-4.1.42.FinalCopy head branch name to clipboard