Log Message:
py-geojson: Update to 3.1.0.

3.1.0
----------

- Add support for Python 3.12

  - https://github.com/jazzband/geojson/pull/222
  - https://github.com/jazzband/geojson/pull/211

- CI improvements

  - https://github.com/jazzband/geojson/pull/217
  - https://github.com/jazzband/geojson/pull/212
  - https://github.com/jazzband/geojson/pull/207

- Unit test improvements

  - https://github.com/jazzband/geojson/pull/215
  - https://github.com/jazzband/geojson/pull/210
  - https://github.com/jazzband/geojson/pull/209