Move to NodeJS 20, ditch Yarn, upgrade deps

[marcokrikke]

Ref. none

Proposed changes

• Move this Github Action to NodeJS 20, as GitHub are removing support for older NodeJS versions. https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/
• Update dependencies
• Replace Yarn with NPM

Security concerns

None

Testing

Not sure how we can test these Actions. Best bet probably is to release it as v1.3.0, test on a project, and then point the v1 tag to the latest release.

Documentation

N/A

[marcokrikke]

Assigning this to you @johanwortel, as you reviewed the last PR as well :)

[johanwortel]

The version in package.json is still 1.1.0.

[marcokrikke]

Fixed!