Bump org.jenkins-ci.plugins:plugin from 5.27 to 5.28

Bumps [org.jenkins-ci.plugins:plugin](https://github.com/jenkinsci/plugin-pom) from 5.27 to 5.28.
- [Release notes](https://github.com/jenkinsci/plugin-pom/releases)
- [Changelog](https://github.com/jenkinsci/plugin-pom/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jenkinsci/plugin-pom/compare/plugin-5.27...plugin-5.28)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:plugin
  dependency-version: '5.28'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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