Update python-app.yml

.github/workflows/python-app.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.10
+    - name: Set up Python 3.12
       uses: actions/setup-python@v3
       with:
         python-version: "3.12"