CI workflow cleanup (sandialabs#352)

* removed conda environment from workflows since newer capytaine/wavespectra work with Windows

* fixed unnecessary capitalization

* still create CI conda environment to fix Mac environment failures

* added conda env fully back in, push workflow deploys docs, split PR workflow

* conda environment activates again

* mambaforge instead of miniforge

* manual cache reset

* reset to older version of setup-miniconda to troubleshoot

Author: michaelcdevin