Update Python version in deployment workflow.

Author: toddbirchard

.github/workflows/python-app.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: "3.12"
           cache: "pip" # caching pip dependencies
 
       - name: Install dependencies