Bump mitoteam/jpgraph from 10.5.2 to 10.5.4

Bumps [mitoteam/jpgraph](https://github.com/mitoteam/jpgraph) from 10.5.2 to 10.5.4.
- [Release notes](https://github.com/mitoteam/jpgraph/releases)
- [Commits](mitoteam/jpgraph@10.5.2...10.5.4)

---
updated-dependencies:
- dependency-name: mitoteam/jpgraph
  dependency-version: 10.5.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]