The Saleor App APL is currently missing the setting "customHeaders" that saleor offers for webhooks: <img width="1069" alt="Screenshot 2024-03-21 at 10 26 41" src="https://github.com/saleor/app-sdk/assets/7526174/0d7f0d10-b4ed-4ee6-947c-74824f601499"> we need this setting.