try using a py2.py3-none-any wheels in version bumps

We have failed version bumps where upstream is shipping pure python code, but is now in a wheel. We should try and catch that.

See this package/feedstock:
- https://github.com/conda-forge/folium-feedstock/blob/master/recipe/meta.yaml
- https://pypi.org/project/folium/#files

See here for a recipe with a wheel: https://github.com/conda-forge/flit_install_py2-feedstock/blob/d22a9b06b22e3b0fe2c3e7d49bee98d28b597845/recipe/meta.yaml

Thanks @ocefpaf for the pointer on this!