Use Java 17 language features

[MarkEWaite]

Use Java 17 language features

Use Java 17 pattern matching instanceof. Makes the code easier to read by avoding the cast that often follows an instanceof.

Use Java 17 string formatting. Slight simplification of the code through OpenRewrite.

Use Java 17 @serial annotation. Annotation that may allow future checks for serialization. No real benefit today as far as I can tell.

Special thanks to OpenRewrite for https://docs.openrewrite.org/recipes/java/migrate/upgradetojava17

Testing done

Confirmed that automated tests pass.

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

[krisstern]

Thanks @MarkEWaite for the PR!