feat(promotion): add htwg-1-prod stage and update promotion policies

kargo-projects/nowchess/ncs-promotion-template.yaml

@@ -5,6 +5,8 @@ metadata:
   namespace: nowchess-kargo
 spec:
   vars:
+    - name: skipArgocdUpdate
+      value: "false"
     - name: repoUrl
       value: https://git.janis-eccarius.de/NowChess/Gitops.git
     - name: component
@@ -69,6 +71,7 @@ spec:
         provider: "gitea"
         prNumber: ${{ task.outputs['open-pr'].pr.id }}
     - uses: argocd-update
+      if: "${{ vars.skipArgocdUpdate != 'true' }}"
       as: argocd-update
       config:
         apps: