Bump asciidoctor-maven-plugin from 2.1.0 to 2.2.1

Bumps [asciidoctor-maven-plugin](https://github.com/asciidoctor/asciidoctor-maven-plugin) from 2.1.0 to 2.2.1.
- [Release notes](https://github.com/asciidoctor/asciidoctor-maven-plugin/releases)
- [Changelog](https://github.com/asciidoctor/asciidoctor-maven-plugin/blob/main/CHANGELOG.adoc)
- [Commits](asciidoctor/asciidoctor-maven-plugin@asciidoctor-maven-plugin-2.1.0...2.2.1)

---
updated-dependencies:
- dependency-name: org.asciidoctor:asciidoctor-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -20,7 +20,7 @@
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
         <sonar.moduleKey>${project.artifactId}</sonar.moduleKey>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <asciidoctor.maven.plugin.version>2.1.0</asciidoctor.maven.plugin.version>
+        <asciidoctor.maven.plugin.version>2.2.1</asciidoctor.maven.plugin.version>
         <asciidoctorj.version>2.5.1</asciidoctorj.version>
         <jruby.version>9.2.6.0</jruby.version>
         <maven.deploy.skip>true</maven.deploy.skip>