specifies node version in package json to see if it resolves the buil…

…d fail in heroku.

Description of Changes

This PR specifies the node version to 16.5.1 in the package.json file in attempt resolve the issue encountered when deploying the application with Heroku. This step was recommended in the Heroku Support documentation.

What are the relevant tickets (if any)

No tickets are related to this PR.

Screenshots (if applicable)

N/A

Testing

I ran npm start and ran through a few user flows in our application to confirm it was still working as expected.

Checklist

[x] The code follows the project's coding standards.
[ ] Unit tests have been added or updated to cover the changes.
[ ] Documentation has been updated to reflect the changes (if applicable).
[x] The code compiles without errors.
[x] The changes have been tested locally and pass all relevant tests.
[x] All new and existing tests pass.
[ ] The pull request has been reviewed by at least one other contributor.

Reviewer Instructions

No additional specific instructions or information that would help the reviewer understand the context or nuances of the changes.

Deployment Notes

Please attempt to deploy the project on Heroku to see if this PR fixes the build issues we were experiencing.

Additional Information

No additional information that may be relevant to the review or understanding of the changes.

turingschool / turlink-fe