zoom: Fix handling of 201 status codes from zoom API.

Apparently, zoom's API will (sometimes?) return a 201 (not 200)
created in response to the API request to create a call.  We fix this
by using the proper requests check for whether or not the request
failed.

zerver/lib/video_calls.py

@@ -18,7 +18,9 @@ def request_zoom_video_call_url(user_id: str, api_key: str, api_secret: str) ->
         json = {}
     )
 
-    if response.status_code != 200:
+    try:
+        response.raise_for_status()
+    except Exception:
         return None
 
     return response.json()

zerver/tests/test_create_video_call.py

@@ -31,9 +31,13 @@ class TestFeedbackBot(ZulipTestCase):
             def json(self) -> Dict[str, str]:
                 return {"join_url": "example.com"}
 
+            def raise_for_status(self) -> None:
+                return None
+
         with mock.patch('requests.post', return_value=MockResponse()):
             result = self.client_get("/json/calls/create")
             self.assert_json_success(result)
+            self.assertEqual(result.status_code, 200)
 
     def test_create_video_request(self) -> None:
         with mock.patch('requests.post'):