cicd:Fix pull request approved #TASK-5564

Author: juanfeSanahuja

.github/workflows/pull-request-approved.yml

@@ -26,7 +26,7 @@ jobs:
           echo "github.event.pull_request.base.ref: ${{ github.event.pull_request.base.ref }}"
           echo "github.event.pull_request.head.ref: ${{ github.event.pull_request.head.ref }}"
           set +e  # Desactivar exit on error temporalmente
-          xetabase_branch=$(./.github/workflows/scripts/get-xetabase-branch.sh ${{ github.event.pull_request.head.ref }} 2>&1)
+          xetabase_branch=$(./.github/workflows/scripts/get-xetabase-branch.sh ${{ github.event.pull_request.base.ref }} 2>&1)
           exit_code=$?
           set -e
           if [ $exit_code -ne 0 ]; then