CI: Run tests also on python 3.11

[theroggy]

• It seems a bit too soon for python 3.12: shapely/geos doesn't seem ready yet
• Python 3.11 in combination with shapely < 2.0 gives issues: when the github action tries to replace shapely 2.0 by 1.8.x, this fails

[mattijn]

Thanks for this PR @theroggy! What do you mean with:

Python 3.11 in combination with shapely < 2.0 gives issues

Is there something missing on the topojson side?

[theroggy]

Thanks for this PR @theroggy! What do you mean with:

Python 3.11 in combination with shapely < 2.0 gives issues

Is there something missing on the topojson side?

No, the step in the github action to downgrade shapely 2.0 (this is installed by default first due to being a dependency of topojson) to 1.8.x fails...

Check out the error here: https://github.com/mattijn/topojson/actions/runs/6588019199/job/17899425538

[mattijn]

Thanks for the PR, I modified the workflow slightly to install shapely first and then install other dependencies. I currently only test against shapely 1.8.5 for the 1.8.x series (thus not 1.8.0 and 1.8.4 anymore) since it also include builds for python 3.11. Now all tests are successful. Thanks again!