Downgrade NodeJS to 14

[felddy]

🗣 Description

Change NodeJS base image to

💭 Motivation and Context

See: PR #201

🧪 Testing

Locally, CI

📷 Screenshots (if appropriate)

✅ Checklist

• This PR has an informative and human-readable title.
• Changes are limited to a single goal - eschew scope creep!
• All relevant type-of-change labels have been added.
• I have read the CONTRIBUTING document.
• These code changes follow project standards.
• All relevant repo and/or project documentation has been updated to reflect
  the changes in this PR.
• Tests have been added to cover the changes in this PR.
• All new and existing tests pass.