Move build dependency to conda-forge channel

Because we can no longer use the default conda channel
we have to source `build` from either pypi or the conda-forge
channel. The `build` package is aliased as `python-build` on
the conda-forge channel.

dev-environment.yml

@@ -30,11 +30,11 @@ dependencies:
   - assertpy
   - pytest
   - pytest-cov
+  - python-build
   - ruff
   - toml
   # Project from source
   - pip
   - pip:
     - git+https://github.com/ninia/jep.git@cfca63f8b3398daa6d2685428660dc4b2bfab67d
-    - build
     - -e .