ruff: Fix ISC003 Explicitly concatenated string should be implicitly concatenated.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

zulip_bots/zulip_bots/bots/connect_four/test_connect_four.py

@@ -73,7 +73,7 @@ class TestConnectFourBot(BotTestCase, DefaultTests):
     def test_game_message_handler_responses(self) -> None:
         board = (
             ":one: :two: :three: :four: :five: :six: :seven:\n\n"
-            + "\
+            "\
 :white_circle: :white_circle: :white_circle: :white_circle: \
 :white_circle: :white_circle: :white_circle: \n\n\
 :white_circle: :white_circle: :white_circle: :white_circle: \

zulip_bots/zulip_bots/bots/trivia_quiz/test_trivia_quiz.py

@@ -22,11 +22,11 @@ class TestTriviaQuizBot(BotTestCase, DefaultTests):
 
     new_question_response = (
         "\nQ: Which class of animals are newts members of?\n\n"
-        + "* **A** Amphibian\n"
-        + "* **B** Fish\n"
-        + "* **C** Reptiles\n"
-        + "* **D** Mammals\n"
-        + "**reply**: answer Q001 <letter>"
+        "* **A** Amphibian\n"
+        "* **B** Fish\n"
+        "* **C** Reptiles\n"
+        "* **D** Mammals\n"
+        "**reply**: answer Q001 <letter>"
     )
 
     def get_test_quiz(self) -> Tuple[Dict[str, Any], Any]:

zulip_bots/zulip_bots/game_handler.py

@@ -531,8 +531,7 @@ class GameAdapter:
         self.instances[game_id] = GameInstance(self, False, subject, game_id, players, stream)
         self.broadcast(
             game_id,
-            f"The game has started in #{stream} {self.instances[game_id].subject}"
-            + "\n"
+            f"The game has started in #{stream} {self.instances[game_id].subject}\n"
             + self.get_formatted_game_object(game_id),
         )
         del self.invites[game_id]