Bumps [maven-jxr-plugin](https://github.com/apache/maven-jxr) from 2.5 to 3.1.1.
- [Release notes](https://github.com/apache/maven-jxr/releases)
- [Commits](https://github.com/apache/maven-jxr/compare/jxr-2.5...jxr-3.1.1

)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-jxr-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...
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