Add github access token

.gitea/workflows/publish-mainnet-laconicd-images.yml

@@ -35,6 +35,12 @@ jobs:
         run: python3 --version
       - name: "Install stack orchestrator"
         run: ./scripts/install-so.sh
+      # Some of the stack's github repos are still private, so acquire an auth token for git here
+      - name: "Set Github access token"
+        env:
+          TOKEN: ${{ secrets.CICD_GITHUB_REPO_TOKEN }}
+        run: |
+          git config --global url."https://$TOKEN:@github.com/".insteadOf https://github.com/
       - name: "Build containers"
         run: |
          PATH=$PATH:~/bin