Up IT used Jetty 9 (no issue) (#2383)

As this is IT suite, but just to get rid of Security
warning on GH.

Author: cstamas

its/core-it-suite/pom.xml

@@ -77,7 +77,7 @@ under the License.
     <proxy.user />
     <proxy.pass />
     <proxy.nonProxyHosts>localhost</proxy.nonProxyHosts>
-    <jetty9Version>9.4.56.v20240826</jetty9Version>
+    <jetty9Version>9.4.57.v20241219</jetty9Version>
 
     <stubPluginVersion>0.1-stub-SNAPSHOT</stubPluginVersion>
   </properties>