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What
This PR updates the actions using Node 16 to Node 18
Why
GitHub is deprecating Node 16 for GitHub Actions. Therefore currently workflow runs using this action show the warning:
Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: arduino/[email protected].
More information is found on GitHub Actions: Transitioning from Node 16 to Node 20
But the test suite uses the nock library to mock and expectations of the HTTP server, and it is not yet supported in Node 20. See: nock/nock#2466
Node 18 is in Maintenance LTS until 2025-04-30, so it can be useful, at least for a year.