Optimize environment.yml for cross-platform compatibility

[Ricardod671]

Hi,

My name is Ricardo, a Platzi student. I noticed that the original environment.yml had some issues when creating the environment on WSL (Windows Subsystem for Linux).

To improve cross-platform compatibility, I made the following changes:

1. Use only the conda-forge channel to avoid conflicts on WSL.
2. Explicitly include pip as a dependency for installing pyjanitor.
3. Reorder dependencies: Python is listed first, followed by pip and other libraries, to ensure proper resolution.

These changes allow the environment to be created reliably on Windows, Linux, and MacOS.

Thank you for considering this pull request!