tests

ci: use node latest for integration tests #370

Job	Run time
yarn-lockfile-check / lockfile-check	10s
linux-unit-tests / linux-unit-tests (lts/*)	37s
linux-unit-tests / linux-unit-tests (latest)	42s
sf-integration-tests (ubuntu-latest)	3m 2s
integration-tests (ubuntu-latest, test:integration:install)	4m 6s
sf-integration-tests (windows-latest)	11m 32s
integration-tests (ubuntu-latest, test:integration:link)	1m 25s
integration-tests (windows-latest, test:integration:install)	4m 10s
integration-tests (windows-latest, test:integration:link)	4m 11s
windows-unit-tests / windows-unit-tests (lts/*)	2m 59s
windows-unit-tests / windows-unit-tests (latest)	3m 34s
	36m 28s

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