Require Jenkins 2.479.1 and Jakarta EE 9

[strangelookingnerd]

Require Jenkins 2.479.1 and Jakarta EE 9

Jenkins 2.479.1 provides Jakarta EE 9, Eclipse Jetty 12, Spring Security 6, and Java 17.

• Update plugin pom and baseline
• Remove deprecations
• Use Java 17 language features
• Minor cleanup

Testing done

mvn clean verify

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

[strangelookingnerd]

Build fails as the changes in the Jenkinsfile will not be used by CI when running from a branch. Build will require Java 17 and above.

[strangelookingnerd]

@Vahila Kindly requesting a review.

[Vahila]

Hi @strangelookingnerd , thanks for your contribution, we appreciate your inputs. We are currently reviewing your changes internally, so this PR will be on hold until our review is complete.
If we decide to proceed with your contribution, a member of the MathWorks team will contact you about signing a Contributor License Agreement (CLA) before we can merge your changes. We’ll keep you updated on the progress.