refactor: update CORS middleware configuration

- Changed CORS middleware to allow all origins by updating the allow_origins parameter to ["*"], enhancing flexibility for cross-origin requests.

Author: atyrode

src/backend/main.py

@@ -105,7 +105,7 @@ async def lifespan(_: FastAPI):
 # CORS middleware setup
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["https://kc.pad.ws", "*"],
+    allow_origins=["*"],
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],