Build with Java 17
    
    Presumably the explicit java-11-openjdk requirement dates back to when
    1.8.0 was the default.  11 was the default version since Fedora 33 and
    RHEL 9, 17 is now the default since Fedora 36 and RHEL 10, and older
    versions are unwanted in RHEL 10.  Java 17 does not supports 1.6 as
    source/target, but at this point nobody should be using anything earlier
    than 1.8, which is now the default of maven-compiler-plugin.