split bump npm version into its own job

[isaaccormack]

No description provided.

[codecov]

Codecov Report

Merging #98 (9d75c0a) into master (4ea0097) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #98   +/-   ##
=======================================
  Coverage   83.85%   83.85%           
=======================================
  Files          10       10           
  Lines         254      254           
  Branches       38       38           
=======================================
  Hits          213      213           
  Misses         41       41           

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