[main](chore) Use Python 3.12.8 in CI

Author: kzajac97

.github/workflows/pytest.yaml

@@ -10,7 +10,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11.8'
+          python-version: '3.12.8'
           cache: 'pip'
           architecture: 'x64'
       - name: Install dependencies