Deprecation warning for 'set-output'

[dht]

When using the action as follows:

- uses: JS-DevTools/npm-publish@v1
              with:
                  package: ./extra/apps/app-campaigns/package.json
                  token: ${{ secrets.NPM_TOKEN }}
                  access: public

We are getting a warning:

publish The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environ

[oberocks]

Here's the link to the page from the command line feedback for this issue: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Just hoping this helps, as I've not yet dived into actually writing any actions just yet. But if there's a way I can help please let me know, because this script is awesome for muh lib (cheers and thank you for the package either way!)

[razor-x]

I've opened a PR with this update: #68.