Upgrade to Jetty 12.0.20

Author: alitokmen

cargo/Jetty+12.x.html

@@ -1859,7 +1859,7 @@ <h5 id="Jetty12.x-Forinstalledcontainero.c.c.c.jetty.Jetty12xInstalledLocalConta
           <h3 id="Jetty12.x-TestedOn">Tested On</h3>
           <p>This container is automatically tested by the <a href="https://codehaus-cargo.semaphoreci.com/projects/cargo">Continous Integration system</a> every time there is a code change.
            <br>
-           The server used for tests is downloaded from: <a href="https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-home/12.0.19/jetty-home-12.0.19.tar.gz">https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-home/12.0.19/jetty-home-12.0.19.tar.gz</a></p>
+           The server used for tests is downloaded from: <a href="https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-home/12.0.20/jetty-home-12.0.20.tar.gz">https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-home/12.0.20/jetty-home-12.0.20.tar.gz</a></p>
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