Fix build process / Update Java Runtime

Some pipelines fail randomly. It seems to be a timing issue and is non-deterministic. This seems to occur more frequently with Java 11. Drop support for Java 8 and Java 11. Add builds for Java 17 and Java 21.

Ensure pipeline builds cleanly and reliably in both Java 17 and Java 21.

Note: Developers should develop with and targeting Java 17 features, but we can compile for subsequent runtimes (e.g., 21) as well since Java is very backwards compatible.