Bump org.asciidoctor:asciidoctorj-diagram from 3.0.1 to 3.1.0

Bumps [org.asciidoctor:asciidoctorj-diagram](https://github.com/asciidoctor/asciidoctorj-diagram) from 3.0.1 to 3.1.0.
- [Release notes](https://github.com/asciidoctor/asciidoctorj-diagram/releases)
- [Commits](asciidoctor/asciidoctorj-diagram@v3.0.1...v3.1.0)

---
updated-dependencies:
- dependency-name: org.asciidoctor:asciidoctorj-diagram
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -71,7 +71,7 @@
         <maven.gpg.plugin.version>3.2.8</maven.gpg.plugin.version>
         <asciidoctor.maven.plugin.version>3.2.0</asciidoctor.maven.plugin.version>
         <asciidoctorj.version>3.0.1</asciidoctorj.version>
-        <asciidoctorj.diagram.version>3.0.1</asciidoctorj.diagram.version>
+        <asciidoctorj.diagram.version>3.1.0</asciidoctorj.diagram.version>
         <central-publishing-maven-plugin.version>0.9.0</central-publishing-maven-plugin.version>
         <maven.javadoc.skip>true</maven.javadoc.skip>
         <gpg.skip>true</gpg.skip>