chore(deps): update dependency org.eclipse.jetty:jetty-alpn-server to v12.0.21 (#4268)

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

Author: renovate[bot]

pom.xml

@@ -44,7 +44,7 @@
         <awaitility.version>4.3.0</awaitility.version>
         <testcontainers.version>1.21.0</testcontainers.version>
         <eureka-client.version>3.1.1</eureka-client.version>
-        <jetty.version>12.0.20</jetty.version>
+        <jetty.version>12.0.21</jetty.version>
 
         <!-- plugin versions -->
         <build-helper-maven-plugin.version>3.6.0</build-helper-maven-plugin.version>