chore: update placeholder string

Author: stainless-app[bot]

tests/api_resources/test_devboxes.py

@@ -1087,7 +1087,7 @@ def test_method_upload_file_with_all_params(self, client: Runloop) -> None:
         devbox = client.devboxes.upload_file(
             id="id",
             path="path",
-            file=b"raw file contents",
+            file=b"Example data",
         )
         assert_matches_type(object, devbox, path=["response"])
 
@@ -2755,7 +2755,7 @@ async def test_method_upload_file_with_all_params(self, async_client: AsyncRunlo
         devbox = await async_client.devboxes.upload_file(
             id="id",
             path="path",
-            file=b"raw file contents",
+            file=b"Example data",
         )
         assert_matches_type(object, devbox, path=["response"])