Bump jfreechart from 1.5.1 to 1.5.2 (#1467)
Bump jfreechart from 1.5.1 to 1.5.2 (#1467)

Bumps [jfreechart](https://github.com/jfree/jfreechart) from 1.5.1 to 1.5.2.
- [Release notes](https://github.com/jfree/jfreechart/releases)
- [Commits](https://github.com/jfree/jfreechart/compare/v1.5.1...v1.5.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
hazendaz/oshi,dbwiddis/oshi