Update API to version https://github.com/plantuml/plantuml-core/relea…

[arnaudroques]

…ses/tag/v0.0.1

Why

Use of official release https://github.com/plantuml/plantuml-core/releases/tag/v0.0.1

What

Checklist

• [ ] Rendering on Preview tested:
  • Basic rendering
  • Stdlib rendering
  • Rendering with refreshing the page after choosing an example
• [ ] Documentation is updated

[github-actions[bot]]

Preview URL is removed automatically after the PR is closed.