Update dependency np to v6.3.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
np	devDependencies	minor	6.2.5 -> 6.3.1

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Release Notes

sindresorhus/np

v6.3.1

Compare Source

• Fix a regression from 6.3.0 (#​552) 59edfe6

v6.3.0

Compare Source

• Fix specifying a custom version via UI (#​546) 6b68244
• Respect preId in .npmrc for release tags (#​547) aebd8ab

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[codecov-commenter]

Codecov Report

Merging #48 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #48   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines           39        39           
=========================================
  Hits            39        39           

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[coveralls]

Coverage remained the same at 100.0% when pulling b77aa5d on renovate/np-6.x into 8d88933 on master.