fix: security dependency jsdom@16.2.0 update

[juanpicado]

Description:

@verdaccio/readme uses jsdom@15.x.x and there is a security patch

https://app.snyk.io/test/npm/jsdom/15.2.1

[codecov]

Codecov Report

Merging #338 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #338   +/-   ##
=======================================
  Coverage   68.16%   68.16%           
=======================================
  Files          29       29           
  Lines        1401     1401           
  Branches      205      204    -1     
=======================================
  Hits          955      955           
  Misses        406      406           
  Partials       40       40           

Flag	Coverage Δ
#core	86.36% <ø> (ø)
#plugins	66.35% <ø> (ø)

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