[6.x.x] Upgrade to latest jetty 9.x version

Author: dizzzz

exist-parent/pom.xml

@@ -113,8 +113,8 @@
         <jaxb.api.version>3.0.1</jaxb.api.version>
         <jaxb.impl.version>3.0.2</jaxb.impl.version>
         <jdom1.version>1.1.3</jdom1.version>
-        <jetty.version>9.4.54.v20240208</jetty.version>
         <log4j.version>2.22.1</log4j.version>
+        <jetty.version>9.4.57.v20241219</jetty.version>
         <lucene.version>4.10.4</lucene.version>
         <milton.version>1.8.1.3</milton.version>
         <saxon.version>9.9.1-8</saxon.version>