build(demo): update Jetty version to 9.4.36.v20210114

Author: paodb

pom.xml

@@ -158,7 +158,7 @@
             <plugin>
                 <groupId>org.eclipse.jetty</groupId>
                 <artifactId>jetty-maven-plugin</artifactId>
-                <version>9.4.18.v20190429</version>
+                <version>9.4.36.v20210114</version>
                 <configuration>
                     <scanIntervalSeconds>-1</scanIntervalSeconds>
                     <!-- Use test scope because the UI/demo classes are in