Fix dev cookbooks

[amoeba]

See #357 for discussion.

The testing and deployment workflows for the dev cookbooks used to depend on the arrow-nightlies conda channel. That channel isn't being updated, see apache/arrow#41856, so now:

• The dev cookbook test workflow uses stable versions
• The publish dev cookbook workflow will fail until we fix this

@raulcd had the idea of not using conda for the dev cookbooks and building something ourselves using existing infrastructure (like the nightly PyArrow wheels). That seems like a reasonable approach to me.

[amoeba]

We can and probably should use the scientific-python nightly wheels for the nightly Python cookbooks, see apache/arrow#43904.