[Snyk] Fix for 2 vulnerabilities

[gregfrasco]

Snyk has created this PR to fix 2 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json

⚠️ Warning

Failed to update the package-lock.json, please update manually before merging. 

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Regular Expression Denial of Service (ReDoS) npm:diff:20180305	182
	Infinite loop SNYK-JS-MARKDOWNIT-6483324	160

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Regular Expression Denial of Service (ReDoS)