Bump asciidoctorj from 1.5.6 to 2.5.4#51

dependabot[bot] wants to merge 1 commit intomasterCourseOrchestra/celestadoc:masterfrom

dependabot/maven/org.asciidoctor-asciidoctorj-2.5.4CourseOrchestra/celestadoc:dependabot/maven/org.asciidoctor-asciidoctorj-2.5.4Copy head branch name to clipboard