Fix stack name to prevent collisions

Author: chrisqm-dev

.github/workflows/deploy.yml

@@ -41,7 +41,7 @@ jobs:
       - name: Test long-running stack (70 minutes)
         uses: aws-actions/aws-cloudformation-github-deploy@master
         with:
-          name: test-long-running-${{ github.run_number }}
+          name: test-long-running-${{ github.run_number }}-${{ github.run_attempt }}
           template: long-running-stack.yaml
           capabilities: "CAPABILITY_IAM"
           timeout-in-minutes: 90