[bot][8.13.x]: Bump org.jfree:jfreechart from 1.5.3 to 1.5.4

Bumps [org.jfree:jfreechart](https://github.com/jfree/jfreechart) from 1.5.3 to 1.5.4.
- [Release notes](https://github.com/jfree/jfreechart/releases)
- [Commits](jfree/jfreechart@v1.5.3...v1.5.4)

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

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

Author: dependabot[bot]

build/optaplanner-build-parent/pom.xml

@@ -31,7 +31,7 @@
     <version.org.apache.poi>4.1.2</version.org.apache.poi>
     <version.org.freemarker>2.3.31</version.org.freemarker>
     <version.org.jdom>1.1.3</version.org.jdom>
-    <version.org.jfree.jfreechart>1.5.3</version.org.jfree.jfreechart>
+    <version.org.jfree.jfreechart>1.5.4</version.org.jfree.jfreechart>
     <version.org.springframework>5.3.18</version.org.springframework>
     <version.org.springframework.boot>2.6.6</version.org.springframework.boot>
     <version.org.assertj>3.22.0</version.org.assertj>