Update python-app.yml: Revert to 3.12-dev and add check-latest

.github/workflows/python-app.yml

@@ -18,14 +18,15 @@ jobs:
     runs-on: ubuntu-20.04  # keep it on 20.04 to have Python 3.5 and 3.6 available
     strategy:
       matrix:
-        python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12.0-beta.1"]
+        python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12-dev"]
 
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
+        check-latest: true
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip flit