Add additional status that we can use for branch protection

.github/workflows/pr_without_change.yml

@@ -0,0 +1,18 @@
+name: Fallback
+# Fallback workflow that provides a succeeding "Check workflow success" job
+# as this is a requirement for being able to merge a PR
+# see https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/defining-the-mergeability-of-pull-requests/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+on:
+  pull_request:
+    paths:
+      - 'scripts/**'
+      - 'website/**'
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  determine-success:
+    name: Check workflow success
+    runs-on: ubuntu-latest
+    steps:
+      -  run: 'echo "No workflow tests required for this PR"'

.github/workflows/workflow_test.yml

@@ -40,6 +40,7 @@ jobs:
       run: pip install wheel
     - name: Planemo lint workflows
       uses: galaxyproject/planemo-ci-action@v1
+      id: lint
       with:
         mode: lint
         workflows: true
@@ -169,3 +170,13 @@ jobs:
           Attention: deployment ${{ needs.deploy.result }}!
 
           https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+  determine-success:
+    name: Check workflow success
+    needs: [setup, lint, combine_outputs]
+    if: ${{ always() && github.ref != 'refs/heads/main' }}
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check status
+      if: ${{ needs.combine_outputs.result != 'skipped' && (needs.lint.result != 'success' || needs.combine_outputs.result != 'success') }}
+      run: exit 1