Use matrix Python version

Author: dixonjoel

.github/workflows/test_actions.yml

@@ -231,7 +231,7 @@ jobs:
       - name: Create project
         run: poetry new test-project
       - name: Set compatible Python version in pyproject.toml
-        run: poetry env use 3.11 -C test-project
+        run: poetry env use ${{ matrix.python-version }} -C test-project
       - name: Add ni-python-styleguide to the project
         run: poetry add ni-python-styleguide -C test-project
       - name: Create poetry.lock