chore(dev-deps): bump @oclif/plugin-help from 6.1.0 to 6.2.0 #570

Job	Run time
yarn-lockfile-check / lockfile-check	21s
linux-unit-tests / determine-node-versions	7s
linux-unit-tests / linux-unit-tests (current)	54s
linux-unit-tests / linux-unit-tests (lts/*)	54s
linux-unit-tests / linux-unit-tests (lts/-1)	55s
sf-integration (lts/*, ubuntu-latest)	42s
sf-integration (latest, ubuntu-latest)	42s
sf-integration (latest, windows-latest)	4m 28s
windows-unit-tests / determine-node-versions	3s
windows-unit-tests / windows-unit-tests (current)	5m 1s
windows-unit-tests / windows-unit-tests (lts/*)	3m 39s
windows-unit-tests / windows-unit-tests (lts/-1)	2m 32s
	20m 18s

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