Update test matrix

Author: antonpirker

.github/workflows/test-integrations-web-2.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6","3.7","3.8","3.11","3.12","3.13"]
+        python-version: ["3.6","3.7","3.8","3.9","3.11","3.12","3.13"]
         # python3.6 reached EOL and is no longer being supported on
         # new versions of hosted runners on Github Actions
         # ubuntu-20.04 is the last version that supported python3.6