The build-and-push job fails post-merge of CAR-1356's REGISTRY_TOKEN
fix: the cache-from/cache-to: type=gha backend does not exist on
Gitea. Build itself succeeds, but the post-build cache export step
fails with 'invalid character N looking for beginning of value' and
cascades to skipping the 'Push Docker image' step.
Per CAR-1362, drop cache-from and cache-to entirely from both the
Build Docker image and Push Docker image steps. Matches the proven-
green cartsnitch/auth/ci.yml pattern (dev branch HEAD has no cache
config and builds-and-pushes in one shot).
Refs: CAR-1356, CAR-1330, CAR-1357.
Co-authored-by: Paperclip <noreply@paperclip.ing>
Barcode Betty
439171e956