[Snyk] Upgrade less from 1.7.4 to 1.7.5

[snyk-bot]

Snyk has created this PR to upgrade less from 1.7.4 to 1.7.5.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 1 version ahead of your current version.
• The recommended version was released 5 years ago, on 2014-09-03.

The recommended version fixes:

Severity	Issue
	Denial of Service (Memory Exhaustion) npm:qs:20140806
	Denial of Service (Event Loop Blocking) npm:qs:20140806-1

Release notes

Package name: less

• 1.7.5 - 2014-09-03
  

  Allow comments in keyframe (complete comment support coming in 2.0)
  pass options to parser from less.render
  Support /deep/ combinator
  handle fragments in data-uri's
  float @charsets to the top correctly
  updates to some dependencies
  Fix interpolated import in media query
  A few other various small corrections

• 1.7.4 - 2014-07-27
  

  Handle uppercase paths in browser
  Show error if an empty selector is used in extend
  Fix property merging in directives
  Fix ordering of charset and import directives
  Fix race condition that caused a rules is undefined error sometimes if you had a complex import strategy
  Better error message for imports missing semi-colons or malformed
  Do not use util.print to avoid deprecate warnings in node 0.11

from less GitHub release notes

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