Bump jetty in /testing/itest/ws/contribution-callback-promotion

Bumps jetty from 6.1.19 to 6.1.23.

---
updated-dependencies:
- dependency-name: org.mortbay.jetty:jetty
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/testing/itest/ws/contribution-callback-promotion/pom.xml b/testing/itest/ws/contribution-callback-promotion/pom.xml
index 74ec901..c64a544 100644
--- a/testing/itest/ws/contribution-callback-promotion/pom.xml
+++ b/testing/itest/ws/contribution-callback-promotion/pom.xml
@@ -47,7 +47,7 @@
         <dependency>

             <groupId>org.mortbay.jetty</groupId>

             <artifactId>jetty</artifactId>

-            <version>6.1.19</version>

+            <version>6.1.23</version>

         </dependency>

                 

     </dependencies>