LPAL-1323: update destroy to branch-name (#2162)

* LPAL-1323: update destroy to branch-name

* add missing output

.github/workflows/workflow_destroy_on_merge.yml

@@ -32,7 +32,15 @@ on:
 
 jobs:
   workspace_name:
-    uses: ministryofjustice/opg-github-workflows/.github/workflows/data-parse-workspace.yml@bd6ac6106a4adda64cecefa3632fb64ab0ddab4b # v1.36.0
+    runs-on: ubuntu-latest
+    outputs:
+      safe_branch_name: ${{ steps.safe_branch_name.outputs.safe }}
+    steps:
+      - name: Set safe branch name
+        id: safe_branch_name
+        uses: ministryofjustice/opg-github-actions/.github/actions/[email protected]
+        with:
+          length: "15"
     if: github.event.pull_request.merged == true
 
   cleanup_workspace:
@@ -73,4 +81,4 @@ jobs:
         env:
           TF_VAR_pagerduty_token: ${{ secrets.PAGERDUTY_TOKEN }}
         run: |
-          ../../scripts/pipeline/workspace_cleanup/destroy_workspace.sh ${{ needs.workspace_name.outputs.name }}
+          ../../scripts/pipeline/workspace_cleanup/destroy_workspace.sh ${{ needs.workspace_name.outputs.safe_branch_name }}