markdown-it is possibly vulnerable to ReDOS in newline rule

[mfranzke]

I am using Pattern Lab Node v5.16.1 on Mac, with Node v12.13.1, using a Node Handlebars Edition.

Expected Behavior

After installation, there shouldn't be any vulnerabilities warnings.

Actual Behavior

The output currently shows some in the output on consuming setups.

There has already been a security fix release by the related dependency markdown-it: https://github.com/markdown-it/markdown-it/blob/master/CHANGELOG.md#1232---2022-01-08

Steps to Reproduce

Do a regular npm install within an existing installation.