Fix Publish Images to GitHub Registry workflow

[acuarica]

After updating GitHub actions to self-hosted runners, the Publish Images to GitHub Registry workflow is failing.

docker-image-publish
The self-hosted runner: hedera-sourcify-linux-medium-qcsnw-v2tdn lost communication with the server.
Verify the machine is running and has a healthy network connection.
Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.

Fix this workflow to allow us to publish images to GH registry.