build(deps): bump org.asciidoctor:asciidoctorj-diagram

Bumps [org.asciidoctor:asciidoctorj-diagram](https://github.com/asciidoctor/asciidoctorj-diagram) from 2.2.11 to 2.2.13.
- [Release notes](https://github.com/asciidoctor/asciidoctorj-diagram/releases)
- [Commits](asciidoctor/asciidoctorj-diagram@v2.2.11...v2.2.13)

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

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -155,7 +155,7 @@
     <!-- Site properties -->
     <asciidoctor.maven.plugin.version>2.2.4</asciidoctor.maven.plugin.version>
     <asciidoctorj.version>2.5.10</asciidoctorj.version>
-    <asciidoctorj.diagram.version>2.2.11</asciidoctorj.diagram.version>
+    <asciidoctorj.diagram.version>2.2.13</asciidoctorj.diagram.version>
 
     <skip-code-generation-tests>true</skip-code-generation-tests>
     <skip-pgp-signing>false</skip-pgp-signing>