Use ci-base:dev for stage SDK extraction

ci-base:latest has a different (older) elb that generates code with
undeclared variables. The web repo targets ci-base:dev which produces
correct C output. Stage must use the same SDK version as dev.

.gitea/workflows/stage.yaml

@@ -117,8 +117,8 @@ jobs:
         if: steps.changetype.outputs.asset_only != 'true'
         run: |
           set -euo pipefail
-          docker pull us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest
-          CID=$(docker create us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest)
+          docker pull us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:dev
+          CID=$(docker create us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:dev)
           sudo mkdir -p /opt/el
           docker cp "$CID:/opt/el" /opt/
           docker rm "$CID"