build(package update): update version of concurrently

[mdhitchcock]

Update version of concurrently away from buggy 3.6.1 and to more current ^4.1

The version of concurrently that the current package.json locks in is old and has a couple serious bugs (https://github.com/kimmobrunfeldt/concurrently/issues/147 and https://github.com/kimmobrunfeldt/concurrently/issues/193). One effect is that any keystroke in a terminal running a package script using nps-utils will crash and leave processes running. This change is just to bump the version of concurrently from ^3.4.0 (which will install 3.6.1) to version ^4.1.0

[codecov[bot]]

Codecov Report

Merging #34 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #34   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          79     79           
=====================================
  Hits           79     79

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