RFR: 7432: Update the spotbugs maven plugin [v2]

[Patrick Reinhart]

On Thu, 21 Oct 2021 20:17:26 GMT, Patrick Reinhart <reinhapa at openjdk.org> wrote:

>> Patrick Reinhart has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR.
>
> I saw it, when running it locally. It also seems to have some issues with a lot of static methods returning static class variables, that in my opinion do not seem to be a problem as those `getInstance()` methods on a different plugin classes.
> 
> There seem to be already an issue opened on the spotbugs project. I will still check the other issues and include potential class changes within this PR later next week.

> Have you had time to take a look at the failing tests yet @reinhapa?

@thegreystone unfortunately not, actually swamped in work ��, hope it get's better this week...

-------------

PR: https://git.openjdk.java.net/jmc/pull/324