Merge pull request #570 from eclipse/dependabot/maven/org.asciidoctor-asciidoctor-maven-plugin-2.2.6

Bump org.asciidoctor:asciidoctor-maven-plugin from 2.2.5 to 2.2.6

Author: andymc12

pom.xml

@@ -44,7 +44,7 @@
         <maven-compiler-plugin.version>3.12.1</maven-compiler-plugin.version>
 
         <!-- Spec document -->
-        <asciidoctor-maven.version>2.2.5</asciidoctor-maven.version>
+        <asciidoctor-maven.version>2.2.6</asciidoctor-maven.version>
         <asciidoctorj-pdf.version>2.3.12</asciidoctorj-pdf.version>
         <maven.build.timestamp.format>MMMM dd, yyyy</maven.build.timestamp.format>
         <revisiondate>${maven.build.timestamp}</revisiondate>