fix: support the ability to retrieve & output information properly when running in workflows

[jaylenw]

What does this PR do?

Modified the code to properly obtain the information the composite action requires using GitHub Input Variables and GITHUB_OUTPUT rather than node-config.

Background info

For some reason, using node-config was just not working at all for running the composite action in another repository but oddly was when it was self-invoked in this repository. I re-factored code to make sure we only relied on node-config for testing only if needed but GitHub INPUT_ variables for everything else. There could be additional improvements that can be done with the code but improvements can be made at a later time.

In addition, there is something odd about composite actions not able to retrieve environment variables in repositories not of their own. I am not sure why this is the case but did some digging and referenced the following:

• INPUT_* environment variables are missing in composite actions actions/runner#665
• https://github.com/orgs/community/discussions/51280

How can this be tested (manually and/or automated test)?

Provide Manual tests Steps if applicable

Refer to the Usage section of the README.md in using this action in your GitHub Actions workflow of your repository.
For this particular case, reference this action with uses: cityoflosangeles/fetch-latest-github-release@ghi-10 to test out these changes from this branch.

Provide steps for running automated tests if applicable

Checkout this branch and run npm test.

Which issue(s) is/are related to this PR?

This PR is/are related to issue(s) #10

close #10

[github-actions]

➿ Code coverage

Filename	Statements	Branches	Functions	Lines
action.js	79.25%	61.54%	66.67%	79.25%

[RV-LACity]

Looks good. Great work @jaylenw !

[jaylenw]

Thanks @RV-LACity