fix: fix output variable validation

[aj-aws]

Description

This change fixes the output variable validation.

Testing

./build.sh yarn run test-all

Checklist

I have:

• [✅] Added new automated tests for any new functionality
• [✅] Run npm run build

Licensing statement (do not modify)

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.