[Snyk] Fix for 4 vulnerable dependency paths

[snyk-bot]

This pull request fixes one or more vulnerable packages in the npm dependencies of this project. See the Snyk test report for this project for details.

The PR includes:

• package.json scripts and a Snyk policy (.snyk) file, which patch the vulnerabilities that can't be upgraded away and ignore vulnerabilities with no fixes.

Vulnerabilities that will be fixed

With a Snyk patch:

• npm:minimatch:20160620

You can read more about Snyk's upgrade and patch logic in Snyk's documentation.

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

Stay secure, The Snyk team

[coveralls]

Coverage remained the same at 93.814% when pulling e92cdd3fb6b27731f591b253b6f80a983e2cb28a on snyk-fix-8d265c37 into ea2e067f6a602836eccaac80dd59436c8690b06c on master.