`GH action` : Use GITHUB_OUTPUT instead of set-output in github actions

[nicdard]

Expected Behaviour

save-state and set-output commands used in GitHub Actions are deprecated and GitHub recommends using environment files.

This PR updates the usage of set-output to $GITHUB_OUTPUT

Instructions for envvar usage from GitHub docs:

https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-output-parameter

Actual Behaviour

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