close old bump prs (#6019)

.github/workflows/helmchart_on_release.yml

@@ -57,6 +57,23 @@ jobs:
           APP_VERSION=${APP_VERSION%/}
           sed -i "s/appVersion: .*/appVersion: $APP_VERSION/" ./charts/windmill/Chart.yaml
 
+      - name: Close existing bump-helm PRs
+        env:
+          GH_TOKEN: ${{ steps.app.outputs.token }}
+        run: |
+          # List open PR numbers whose title starts with the prefix
+          prs=$(gh pr list \
+                  --state open \
+                  --search '"helm: bump version to" in:title' \
+                  --json number \
+                  -q '.[].number')
+
+          for pr in $prs; do
+            echo "Closing outdated bump PR #$pr"
+            gh pr close "$pr" \
+              --comment "Closed automatically – superseded by a newer Helm-chart bump PR."
+          done
+
       - name: Commit and push
         run: |
           git add .