feat: do not use cached python versions when run by schedule

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-          check-latest: false
+          check-latest: ${{ github.event_name == 'schedule' }}
       - name: Install zbar shared lib for QReader (Linux)
         if: runner.os == 'Linux'
         run: |