test older 3.9 version

Author: arielj

.github/workflows/test_pythons.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15-dev"]
+        python-version: ["3.9.23", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15-dev"]
 
     steps:
       - name: Checkout repository