There is a comment block at the end of the maven.yml file that appears to be from May of 2020. I believe that it mentions an issue that has been resolved should we remove these lines?
https://github.com/apache/creadur-rat/blob/c680d34050b392c813999550fd9f52631abf0557/.github/workflows/maven.yml#L73-L76 -- LinkedIn: http://www.linkedin.com/in/claudewarren