[Snyk] Fix for 1 vulnerabilities

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Adding or updating a Snyk policy (.snyk) file; this file is required in order to apply Snyk vulnerability patches. Find out more.

Vulnerabilities that will be fixed

With a Snyk patch:

Severity	Issue
	Command Injection SNYK-JS-TREEKILL-536781

Check the changes in this PR to ensure they won't cause issues with your project.

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Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:

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[coveralls]

Pull Request Test Coverage Report for Build 339

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 333:	0.0%
Covered Lines:	598
Relevant Lines:	598

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💛 - Coveralls