Bump org.jenkins-ci.plugins.workflow:workflow-aggregator

Bumps [org.jenkins-ci.plugins.workflow:workflow-aggregator](https://github.com/jenkinsci/workflow-aggregator-plugin) from 2.6 to 608.v67378e9d3db_1.
- [Release notes](https://github.com/jenkinsci/workflow-aggregator-plugin/releases)
- [Commits](https://github.com/jenkinsci/workflow-aggregator-plugin/commits)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins.workflow:workflow-aggregator
  dependency-version: 608.v67378e9d3db_1
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -91,7 +91,7 @@
     <dependency>
       <groupId>org.jenkins-ci.plugins.workflow</groupId>
       <artifactId>workflow-aggregator</artifactId>
-      <version>2.6</version>
+      <version>608.v67378e9d3db_1</version>
       <scope>test</scope>
     </dependency>