skip test as https://connect-op.herokuapp.com/jwks.json fails

Author: jschlyter

tests/test_04_key_jar.py

@@ -443,6 +443,7 @@ def test_no_use(self):
         assert enc_key != []
 
     @pytest.mark.network
+    @pytest.mark.skip("connect-op.herokuapp.com is broken")
     def test_provider(self):
         kj = KeyJar()
         kj.load_keys(