Update jetty9.version to v9.4.53.v20231009

Author: renovate[bot]

pom.xml

@@ -57,7 +57,7 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
         <jackson.version>2.12.3</jackson.version>
-        <jetty9.version>9.4.52.v20230823</jetty9.version>
+        <jetty9.version>9.4.53.v20231009</jetty9.version>
         <jetty10.version>10.0.17</jetty10.version>
         <jetty11.version>11.0.16</jetty11.version>
         <jetty12.version>12.0.1</jetty12.version>