Bump io.undertow:undertow-core from 2.3.18.Final to 2.3.20.Final in /bot-agent#147

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dependabot/maven/bot-agent/io.undertow-undertow-core-2.3.20.Finalnetworknt/light-bot:dependabot/maven/bot-agent/io.undertow-undertow-core-2.3.20.FinalCopy head branch name to clipboard