[Snyk] Security upgrade @changesets/cli from 2.29.3 to 2.29.6

[dnotes]

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

Snyk changed the following file(s):

• package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Symlink Attack SNYK-JS-TMP-11501554	661

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[dnotes]

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