[Snyk] Security upgrade express from 4.18.2 to 4.21.2

[eswdd]

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

Snyk changed the following file(s):

• package.json
• package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Regular Expression Denial of Service (ReDoS) SNYK-JS-PATHTOREGEXP-8482416	721

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• Check the changes in this PR to ensure they won't cause issues with your project.
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• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Regular Expression Denial of Service (ReDoS)

[coveralls]

Pull Request Test Coverage Report for Build 12268198944

Details

• 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 80.58%

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Totals
Change from base Build 4000633553:	0.0%
Covered Lines:	537
Relevant Lines:	612

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💛 - Coveralls