Bump org.asciidoctor:asciidoctorj-pdf from 2.3.18 to 2.3.19

Bumps [org.asciidoctor:asciidoctorj-pdf](https://github.com/asciidoctor/asciidoctorj-pdf) from 2.3.18 to 2.3.19.
- [Release notes](https://github.com/asciidoctor/asciidoctorj-pdf/releases)
- [Changelog](https://github.com/asciidoctor/asciidoctorj-pdf/blob/main/CHANGELOG.adoc)
- [Commits](asciidoctor/asciidoctorj-pdf@v2.3.18...v2.3.19)

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

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

pom.xml

@@ -17,7 +17,7 @@
         <asciidoctor.maven.plugin.version>2.2.6</asciidoctor.maven.plugin.version>
         <asciidoctorj.version>2.5.1</asciidoctorj.version>
         <asciidoctorj.diagram.version>2.3.1</asciidoctorj.diagram.version>
-        <asciidoctorj.pdf.version>2.3.18</asciidoctorj.pdf.version>
+        <asciidoctorj.pdf.version>2.3.19</asciidoctorj.pdf.version>
         <jetty-maven-plugin.version>11.0.24</jetty-maven-plugin.version>
     </properties>