Bump org.asciidoctor:asciidoctorj-pdf from 2.3.15 to 2.3.17 (#495)

Co-authored-by: Boni Garcia <boni.garcia@uc3m.es>

Author: dependabot[bot]

pom.xml

@@ -29,7 +29,7 @@
         <maven-gpg-plugin.version>3.2.4</maven-gpg-plugin.version>
         <exec-maven-plugin.version>3.0.0</exec-maven-plugin.version>
         <maven-asciidoctor-plugin.version>3.0.0</maven-asciidoctor-plugin.version>
-        <asciidoctorj-pdf.version>2.3.15</asciidoctorj-pdf.version>
+        <asciidoctorj-pdf.version>2.3.17</asciidoctorj-pdf.version>
         <maven-site.version>3.12.1</maven-site.version>
         <maven-project-info-reports.version>3.5.0</maven-project-info-reports.version>
         <maven-javadoc-plugin.version>3.7.0</maven-javadoc-plugin.version>