style: reformat assert to satisfy ruff

Author: dpdanpittman

tests/server/test_streamable_http_manager.py

@@ -319,9 +319,9 @@ async def mock_receive():
         assert error_data["error"]["message"] == "Session not found"
 
         # Verify warning was logged with the session ID
-        assert any(
-            "non-existent-session-id" in record.message for record in caplog.records
-        ), "Should log a warning with the unknown session ID"
+        assert any("non-existent-session-id" in record.message for record in caplog.records), (
+            "Should log a warning with the unknown session ID"
+        )
 
 
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