Fix the release build (#1177)

previous variable was only set for a PR, however the release uses a tag trigger.

Co-authored-by: stheppi <[email protected]>

.github/workflows/build.yml

@@ -231,7 +231,7 @@ jobs:
           format: 'HTML'
           args: >-
               --failOnCVSS 5
-              --suppression https://raw.githubusercontent.com/${{ github.event.pull_request.head.repo.owner.login }}/${{github.event.repository.name}}/${{ steps.branch_name.outputs.tag }}${{ steps.branch_name.outputs.current_branch }}/suppression.xml
+              --suppression https://raw.githubusercontent.com/${{ github.repository_owner }}/${{ github.event.repository.name }}/${{ steps.branch_name.outputs.tag }}${{ steps.branch_name.outputs.current_branch }}/suppression.xml
       - name: Upload Test results
         uses: actions/upload-artifact@master
         with: