Update jetty monorepo to v12.1.6 (#3011)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

its/pom.xml

@@ -18,7 +18,7 @@
   <properties>
     <maven.compiler.release>17</maven.compiler.release>
     <junit.version>6.0.2</junit.version>
-    <jetty.version>12.1.5</jetty.version>
+    <jetty.version>12.1.6</jetty.version>
     <testInclude>**/*</testInclude>
     <failIfNoTests>true</failIfNoTests>
   </properties>