Choose generic versions for Java version in CI #1514
Merged
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By choosing a less specific version, we can take advantage of the pre-installed JVMs as part of the Github runner's image, https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-README.md#java.
In that vein as well, "AdoptOpenJDK" is now "Adoptium" / "Temurin", and so to take advantage of cache we need to choose that.
JDK 17 should be pre-installed as part of actions/runner-images#4085
See https://blog.adoptopenjdk.net/2021/08/goodbye-adoptopenjdk-hello-adoptium/
Follow up, #1513