There's a merged pull request on the void-packages repository

python3-shapely: update to 1.8.1.
https://github.com/void-linux/void-packages/pull/36340

Description:
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#### Testing the changes
- I tested the changes in this PR: **briefly**

- I built this PR locally for my native architecture, x64_glibc

Note: a few of the tests fail. Upstream is aware of this, but they won't address it in any future 1.8.X releases
https://github.com/shapely/shapely/issues/1207