Upgrade to Groovy 4.0.28

[jamesfredley]

Upgrade to Groovy 4.0.28

https://github.com/apache/groovy/releases/tag/GROOVY_4_0_28

https://groovy-lang.org/changelogs/changelog-4.0.28.html

[jamesfredley]

#46511

[snicoll]

Please review the issue template before creating an issue. We don't need an issue for dependency upgrades:

- Managed Dependency Upgrade
You DO NOT need to raise an issue for a managed dependency version upgrade as there's a semi-automatic process for checking managed dependencies for new versions before a release. BUT pull requests for upgrades that are more involved than just a version property change are still most welcome.

Also, you should not open an issue if you intend to create a PR immediately:

- With an Immediate Pull Request
An issue will be closed as a duplicate of the immediate pull request, so you don't have to raise an issue if you plan to create a pull request immediately.

[jamesfredley]

@snicoll Ok, thank you. I was trying to be helpful and follow your prior issue/PRs for Groovy version updates.

Thank you for running with this on:
#46512
#46514
#46516

[snicoll]

No worries

your prior issue/PRs for Groovy version updates.

Pull Request are declined unless they aren't a simple version bump (code change is required). As for the issues, these are created automatically by a tool we're managing.