Revert to Python 3.12 (sandialabs#394)

* Try specifying subversion

* Test new cache

* revert to 3.12

* Revert comment back to normal

Author: jtgrasb

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.13' # CHANGE: Python version
+        python-version: '3.12' # CHANGE: Python version
 
     - name: Build a binary wheel and a source tarball
       run: |
@@ -46,7 +46,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v4
       with:
-        python-version: '3.13' # CHANGE: Python version
+        python-version: '3.12' # CHANGE: Python version
 
     - name: Install dependencies
       run: sudo apt-get install libglu1 pandoc gifsicle

README.md

@@ -12,7 +12,7 @@ Refer to [WecOptTool documentation](https://sandialabs.github.io/WecOptTool/) fo
 ## Getting started
 **If you are brand new to Python and/or want detailed installation instructions, [click here](https://github.com/sandialabs/WecOptTool/blob/main/INSTALLATION.md).**
 
-WecOptTool requires Python >= 3.8. Python 3.12 & 3.13 are supported.
+WecOptTool requires Python >= 3.8. Python 3.11 & 3.12 are supported.
 It is strongly recommended you create a dedicated virtual environment (e.g., using [`conda`](https://www.anaconda.com/), [`mamba`](https://mamba.readthedocs.io/en/latest/), `venv`, etc.) before installing WecOptTool.
 
 From your dedicated environment, you can install WecOptTool via `conda`, `pip`, or `mamba`: