chore: drop support for Node.js 16 and lower

[dhmlau]

BREAKING-CHANGE: drop support for Node.js 16 and lower

Checklist

• DCO (Developer Certificate of Origin) signed in all commits
• npm test passes on your machine
• New tests added or existing tests modified to cover all changes
• Code conforms with the style guide
• Commit messages are following our guidelines

[coveralls]

Pull Request Test Coverage Report for Build 6850676696

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 59.314%

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Totals
Change from base Build 6845661110:	0.0%
Covered Lines:	713
Relevant Lines:	1133

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💛 - Coveralls