Merge pull request #349 from rabbitmq/dependabot/maven/org.asciidoctor-asciidoctor-maven-plugin-2.2.4

Bump asciidoctor-maven-plugin from 2.2.3 to 2.2.4

Author: acogoluegnes

pom.xml

@@ -85,7 +85,7 @@
     <maven-javadoc-plugin.version>3.5.0</maven-javadoc-plugin.version>
     <maven.jar.plugin.version>3.3.0</maven.jar.plugin.version>
     <build-helper-maven-plugin.version>3.4.0</build-helper-maven-plugin.version>
-    <asciidoctor.maven.plugin.version>2.2.3</asciidoctor.maven.plugin.version>
+    <asciidoctor.maven.plugin.version>2.2.4</asciidoctor.maven.plugin.version>
     <asciidoctorj.version>2.5.9</asciidoctorj.version>
     <asciidoctorj.pdf.version>2.3.7</asciidoctorj.pdf.version>
     <asciidoctorj.diagram.version>2.2.8</asciidoctorj.diagram.version>