[bot][8.38.x-prod]: Bump org.jfree:jfreechart from 1.5.4 to 1.5.5

Bumps [org.jfree:jfreechart](https://github.com/jfree/jfreechart) from 1.5.4 to 1.5.5.
- [Release notes](https://github.com/jfree/jfreechart/releases)
- [Commits](jfree/jfreechart@v1.5.4...v1.5.5)

---
updated-dependencies:
- dependency-name: org.jfree:jfreechart
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build/optaplanner-build-parent/pom.xml

@@ -34,7 +34,7 @@
     <version.org.assertj>3.24.2</version.org.assertj>
     <version.org.freemarker>2.3.32</version.org.freemarker>
     <version.org.jdom2>2.0.6.1</version.org.jdom2>
-    <version.org.jfree.jfreechart>1.5.4</version.org.jfree.jfreechart>
+    <version.org.jfree.jfreechart>1.5.5</version.org.jfree.jfreechart>
     <version.org.openrewrite.recipe>1.19.3</version.org.openrewrite.recipe>
     <version.org.slf4j>1.7.36</version.org.slf4j><!-- TODO keep in sync with quarkus-bom -->
     <version.org.springframework>5.3.27</version.org.springframework>