https://github.com/asciidoctor/asciidoctorj/releases/tag/v3.0.0
First issue I encountered was:
java.lang.AbstractMethodError: Receiver class org.springframework.restdocs.asciidoctor.DefaultAttributesPreprocessor does not define or inherit an implementation of the resolved method 'abstract org.asciidoctor.extension.Reader process(org.asciidoctor.ast.Document, org.asciidoctor.extension.PreprocessorReader)' of abstract class org.asciidoctor.extension.Preprocessor.