Consistent 504 errors

[jp-bennett]

The Meshtastic project uses this action, and consistently sees 504 errors when trying to upload our release artifact.

Artifacts repo: meshtastic/artifacts
Artifacts branch: device
Artifacts prefix: "pr2998-"
Processing artifact: ./firmware-2.2.16.826ff8f.zip
GET /repos/meshtastic/artifacts/contents/.?ref=device - [20](https://github.com/meshtastic/firmware/actions/runs/7137019219/job/19436715633#step:13:21)0 in [21](https://github.com/meshtastic/firmware/actions/runs/7137019219/job/19436715633#step:13:22)6ms
Uploading file pr2998-firmware-2.2.16.826ff8f.zip (first time)
PUT /repos/meshtastic/artifacts/contents/pr2998-firmware-2.2.16.826ff8f.zip - 504 in 11158ms
Error: We couldn't respond to your request in time. Sorry about that. Please try resubmitting your request and contact us if the problem persists.