Require Jenkins 2.479.1 or newer

[darinpope]

Used OpenRewrite to convert to Java 17 syntax

Testing done

ran mvn clean verify

Confirmed that coverage badges extension plugin (the only plugin dependent on this plugin) passes its automated tests with the incremental build of this plugin

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[MarkEWaite]

Thanks! A similar pull request includes additional changes for the Java EE 8 to Jakarta EE 9 transition. That pull request is:

• Require Jenkins 2.479 or newer #345

We'll want to highlight the Java EE 8 to Jakarta EE 9 transition in one of our sessions, since that transition is a key component of the 2.479 release.

There is an OpenRewrite recipe that is worth trying in our environment. It won't transform StaplerRequest to StaplerRequest2 or StaplerResponse to StaplerResponse2 but it will handle the javax.servlet to jakarta.servlet namespace change.

[MarkEWaite]

Not yet ready to merge and release because we need to wait for more users to adopt 2.479.x, but the code changes look good to me.

[MarkEWaite]

I think that we've waited long enough. Merging and releasing.