adding stack output

[mridhul]

@Malvikabhalla99 could you please share the following?

1. Screenshots of github action results with and without output
2. links to your github action output

[Malvikabhalla99]

1. Screenshot of Github action result a. With output b. without output

2. Links to github action output a. With output - https://github.com/Malvikabhalla99/cfn-examples/runs/3857829989?check_suite_focus=true b. Without output - https://github.com/Malvikabhalla99/cfn-examples/runs/3858011515?check_suite_focus=true