Bump org.jenkins-ci.plugins:cloudbees-folder

Bumps [org.jenkins-ci.plugins:cloudbees-folder](https://github.com/jenkinsci/cloudbees-folder-plugin) from 6.921.vfb_b_224371fb_4 to 6.928.v7c780211d66e.
- [Release notes](https://github.com/jenkinsci/cloudbees-folder-plugin/releases)
- [Commits](https://github.com/jenkinsci/cloudbees-folder-plugin/commits/6.928.v7c780211d66e)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:cloudbees-folder
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

test/pom.xml

@@ -200,7 +200,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>cloudbees-folder</artifactId>
-      <version>6.921.vfb_b_224371fb_4</version>
+      <version>6.928.v7c780211d66e</version>
       <scope>test</scope>
     </dependency>
     <dependency>