Update dependency color-string to 1.5.5 [SECURITY]

[renovate[bot]]

This PR contains the following updates:

Package	Change
color-string	1.5.4 -> 1.5.5

GitHub Vulnerability Alerts

CVE-2021-29060

In the npm package color-string, there is a ReDos (Regular Expression Denial of Service) vulnerability regarding an exponential time complexity for linearly increasing input lengths for hwb() color strings.

Strings reaching more than 5000 characters would see several milliseconds of processing time; strings reaching more than 50,000 characters began seeing 1500ms (1.5s) of processing time.

The cause was due to a the regular expression that parses hwb() strings - specifically, the hue value - where the integer portion of the hue value used a 0-or-more quantifier shortly thereafter followed by a 1-or-more quantifier.

This caused excessive backtracking and a cartesian scan, resulting in exponential time complexity given a linear increase in input length.

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