Node.js 16 deprecation

[leocencetti]

Node.js 16 is now deprecated and should be transitioned to Node.js 20. Here is the warning for reference:

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: fiddlermikey/action-merge-json@v1.0.0. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
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