Bump netty-codec from 4.1.50.Final to 4.1.68.Final in /java/javanote/java-basic-study#2

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dependabot/maven/java/javanote/java-basic-study/io.netty-netty-codec-4.1.68.FinalFierygit/notepad:dependabot/maven/java/javanote/java-basic-study/io.netty-netty-codec-4.1.68.FinalCopy head branch name to clipboard