use newer python

Author: lily-tomkovic-DWR

.github/workflows/python-package-conda.yml

@@ -12,10 +12,10 @@ jobs:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0
-    - name: Set up Python 3.8
+    - name: Set up Python 3.12
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.12
     - name: Add conda to system path
       run: |
         # $CONDA is an environment variable pointing to the root of the miniconda directory