Fix osx 3.13t

Author: AlenkaF

dev/tasks/python-wheels/github.osx.yml

@@ -131,6 +131,7 @@ jobs:
       - name: Test Wheel
         env:
           PYTEST_ADDOPTS: "-k 'not test_cancellation'"
+          PYTHON: "{{ python_version }}"
           PYTHON_GIL: {{ 0 if python_abi_tag.endswith('t') else 1 }}
         run: |
           $PYTHON -m venv test-env