Just a heads up on that issue.
It seems that App Center had trouble to access the jitpack.io CDN for that particular dependency.
There’re various posts regarding this CDN acting up with 404 or 522 since September after they re-architected their infra.
As this is a peer dependency we have no control over, the only solution is to try again later.
You can re-run the build for that particular branch directly from App Center to avoid the overhead of doing a full project deployment with the Native Builder.
I was able to have a test build working after retrying a couple of times late yesterday.
Regards,
Stefanos – Mendix