Merge pull request #512 from rabbitmq/dependabot/maven/org.asciidoctor-asciidoctor-maven-plugin-3.0.0

Bump org.asciidoctor:asciidoctor-maven-plugin from 2.2.6 to 3.0.0

Author: acogoluegnes

pom.xml

@@ -81,7 +81,7 @@
     <maven-javadoc-plugin.version>3.6.3</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>2.2.6</asciidoctor.maven.plugin.version>
+    <asciidoctor.maven.plugin.version>3.0.0</asciidoctor.maven.plugin.version>
     <asciidoctorj.version>2.5.11</asciidoctorj.version>
     <asciidoctorj.diagram.version>2.3.0</asciidoctorj.diagram.version>
     <buildnumber.plugin.version>1.4</buildnumber.plugin.version>