fix(less): upgrade make-dir to v4 to fix security vulnerability

[jorenbroekema]

fixes #3806

What:

Bump make-dir to v4

Why:

There is a security vulnerability in make-dir v2:

$ npm ls semver  
less@4.1.3 project
└─┬ make-dir@2.1.0
       └── semver@5.7.1

Which is fixed in the latest make-dir v4

Checklist:

• Documentation N\A
• Added/updated unit tests N\A
• Code complete N\A

[iChenLei]

Thank you.

[SandeepJoel]

@iChenLei and @matthew-dean Is there any update on when this PR will be reviewed and merged ? Because the latest versions of packages/less also has this semver vulnerability through old version of make-dir ?