fix `compileJdk9mainJava` task dependencies
fix `compileJdk9mainJava` task dependencies

This task depends on the compiled output of the `compileJava` task, so we should explicitly declare this dependency. Otherwise, if you just run `compileJdk9mainJava` on a clean build it breaks.

Signed-off-by: Peter Gafert <cdbfcea01cf62f959f8b10da948a53f2869d9b6c@tngtech.com>

TNG/ArchUnit,TNG/ArchUnit