[TASK] CI test on python 3.9 -- 3.11

Author: PierreSchnizer

.github/workflows/python-package.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11"] # ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11"]
     steps:
     - name: Checkout
       uses: actions/checkout@v4