Change deprecated .buffer() to .arrayBuffer()

[MariusVB]

dropbox-sdk-js/src/response.js

Line 51 in 6bfaf89

res.buffer().then((data) => resolve(data));

The .buffer() will be removed in upcoming node versions. On node 20, I'm getting a deprecation error at every file download...

[greg-db]

Thanks for the report! I'll ask the team to update that.

[MariusVB]

Are you a bot @greg-db ?

[greg-db]

@MariusVB No, I am not a bot. I am a real person monitoring these issues.

[toddjudd]

@greg-db I created and closed an issue to make the same fix. any chance this gets merged? I'm monkey patching for the time being.

[greg-db]

@toddjudd Thanks for the note. This is still open with the team but I don't have an update on it yet. I'll follow up here once I do.