test: run test suite against OAS 3.1.0

Author: codectl

tests/webframeworks/test_flask.py

@@ -14,7 +14,7 @@ def app():
         yield app
 
 
-@pytest.fixture(scope="function", params=("2.0", "3.0.0"))
+@pytest.fixture(scope="function", params=("2.0", "3.1.0"))
 def spec(request):
     return APISpec(
         title="Swagger Petstore",