[Snyk] Security upgrade gulp-cli from 2.3.0 to 3.0.0

[jwagantall]

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Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• tools/toolchain/package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Malicious Package SNYK-JS-ERROREX-12554213	965

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• Max score is 1000. Note that the real score may have changed since the PR was raised.
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