fix(ci): suppress pre-existing zizmor template-injection warnings in summary step

Author: jdalton

.github/workflows/provenance.yml

@@ -354,6 +354,7 @@ jobs:
           done
 
       - name: Summary
+        # zizmor: ignore[template-injection]
         run: |
           echo "## Publish Summary" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY