Change Node.js version to 20 in CI workflow #1682

Job	Run time
build (24)	1m 56s
build (22)	2m 11s
npm-publish-dev / prerelease-check	6s
npm-publish-latest	0s
github-release	0s
gh-pages	0s
Dependabot	0s
npm-publish-dev / npm-publish-build	0s
	4m 13s

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