Avoid pytest.mark.usefixtures call without arguments

This will raise a warning in an upcoming change in pytest

Author: daria-shaw

src/pytest_bdd/scenario.py

@@ -271,16 +271,18 @@ def decorator(*args: Callable[P, T]) -> Callable[P, T]:
         [fn] = args
         func_args = get_args(fn)
 
-        # We need to tell pytest that the original function requires its fixtures,
-        # otherwise indirect fixtures would not work.
-        @pytest.mark.usefixtures(*func_args)
         def scenario_wrapper(request: FixtureRequest, _pytest_bdd_example: dict[str, str]) -> Any:
             __tracebackhide__ = True
             scenario = templated_scenario.render(_pytest_bdd_example)
             _execute_scenario(feature, scenario, request)
             fixture_values = [request.getfixturevalue(arg) for arg in func_args]
             return fn(*fixture_values)
 
+        if func_args:
+            # We need to tell pytest that the original function requires its fixtures,
+            # otherwise indirect fixtures would not work.
+            scenario_wrapper = pytest.mark.usefixtures(*func_args)(scenario_wrapper)
+
         example_parametrizations = collect_example_parametrizations(templated_scenario)
         if example_parametrizations is not None:
             # Parametrize the scenario outlines