Drive modules ci job python version off of var too

.github/workflows/modules.yml

@@ -46,11 +46,7 @@ jobs:
       - name: Setup python
         uses: actions/setup-python@v1
         with:
-          # This should generally be the latest stable release of python, but
-          # dyn and ovh don't currently support changes made in 3.10 so we'll
-          # leave it 3.9 for now. Once 3.11 lands though we'll bump to it and
-          # if they haven't updated they'll be removed from the matrix
-          python-version: '3.9'
+          python-version: ${{ vars.PYTHON_VERSION_CURRENT }}
           architecture: x64
       - name: Test Module
         run: |