v2.0.0b1

• Add support for Plone 6.1.x.
  Drop support for Plone 5.2.x.
  Update Makefile and dependencies, use uv and trusted publishing.
  Use Ruff, drop Black.
  [jensens]

• Package: PEP420 style [jensens]

• TinyMCE has changed a type of a configuration field (tiny_config["menubar"]). We now support both (old and new) types now.
  [gogobd, jensens]