[Snyk] Security upgrade @swimlane/ngx-charts from 13.0.4 to 20.4.1

[EricMuller]

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-D3COLOR-1076592	586

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🦉 Regular Expression Denial of Service (ReDoS)