Declare ditaa extension

Author: acogoluegnes

pom.xml

@@ -86,6 +86,7 @@
     <asciidoctor.maven.plugin.version>3.2.0</asciidoctor.maven.plugin.version>
     <asciidoctorj.version>3.0.0</asciidoctorj.version>
     <asciidoctorj.diagram.version>3.0.1</asciidoctorj.diagram.version>
+    <asciidoctorj.diagram.ditaamini.version>1.0.3</asciidoctorj.diagram.ditaamini.version>
     <buildnumber.plugin.version>3.2.1</buildnumber.plugin.version>
     <jmh.version>1.37</jmh.version>
     <spotless.version>2.44.5</spotless.version>
@@ -436,6 +437,11 @@
             <artifactId>asciidoctorj-diagram</artifactId>
             <version>${asciidoctorj.diagram.version}</version>
           </dependency>
+          <dependency>
+              <groupId>org.asciidoctor</groupId>
+              <artifactId>asciidoctorj-diagram-ditaamini</artifactId>
+              <version>${asciidoctorj.diagram.ditaamini.version}</version>
+          </dependency>
         </dependencies>
         <configuration>
           <sourceDirectory>src/docs/asciidoc</sourceDirectory>