test(videos): use supported model in fixtures

Author: majiayu000

tests/api_resources/test_videos.py

@@ -39,7 +39,7 @@ def test_method_create_with_all_params(self, client: OpenAI) -> None:
         video = client.videos.create(
             prompt="x",
             input_reference=b"raw file contents",
-            model="string",
+            model="sora-2",
             seconds="4",
             size="720x1280",
         )
@@ -297,7 +297,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncOpenAI) ->
         video = await async_client.videos.create(
             prompt="x",
             input_reference=b"raw file contents",
-            model="string",
+            model="sora-2",
             seconds="4",
             size="720x1280",
         )