This commit adds a new JDK 18 variant to the CI build image and configures a JDK18 build (sources compiled with JDK17, tests compiled and run with JDK18) to the CI pipeline. Closes gh-27607
This commit adds a new JDK 18 variant to the CI build image and configures a JDK18 build (sources compiled with JDK17, tests compiled and run with JDK18) to the CI pipeline. Closes gh-27607