chore: synced file(s) with cds-snc/site-reliability-engineering (#417)

chore: synced local '.github/workflows/backstage-catalog-helper.yml' with remote 'tools/sre_file_sync/backstage-catalog-helper.yml'

Co-authored-by: sre-read-write[bot] <92993749+sre-read-write[bot]@users.noreply.github.com>

.github/workflows/backstage-catalog-helper.yml

@@ -25,9 +25,10 @@ jobs:
           app_id: ${{ secrets.SRE_BOT_RW_APP_ID }}
           private_key: ${{ secrets.SRE_BOT_RW_PRIVATE_KEY }}
       - name: Create pull request
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@6cd32fd93684475c31847837f87bb135d40a2b79 # v7.0.3
         with:
           token: ${{ steps.generate_token.outputs.token}}
+          sign-commits: true
           commit-message: 'Add catalog-info.yaml'
           branch: 'backstage/catalog-info'
           title: 'Add catalog-info.yaml'