The goal of this PR is to add a Java 21 build and test step in the CI pipeline. However, currently only an early access version of Java 21 Temurin is available. So I will merge this once the official version is released.
coverage: 95.005%. remained the same when pulling e31a9062ec5c077f8939c69c802b4da54398225f on F-java-21 into 1c4adf10e2ef29d86f94e572c35e7e22137ff3a0 on master.
The goal of this PR is to add a Java 21 build and test step in the CI pipeline. However, currently only an early access version of Java 21 Temurin is available. So I will merge this once the official version is released.