chore: update dependency @types/node to v10.12.12

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
@​types/node	devDependencies	patch	10.12.11 -> 10.12.12	source

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[codecov]

Codecov Report

Merging #150 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #150   +/-   ##
=======================================
  Coverage   93.23%   93.23%           
=======================================
  Files           4        4           
  Lines        2187     2187           
  Branches      171      171           
=======================================
  Hits         2039     2039           
  Misses        131      131           
  Partials       17       17

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