Upgrade to Node 14

[anarast]

No description provided.

[codecov]

Codecov Report

Merging #116 (6d191a8) into master (fd9b7bd) will increase coverage by 1.14%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master      #116      +/-   ##
===========================================
+ Coverage   98.85%   100.00%   +1.14%     
===========================================
  Files           3         3              
  Lines         436       436              
  Branches       89        83       -6     
===========================================
+ Hits          431       436       +5     
+ Partials        5         0       -5     

Impacted Files	Coverage Δ
src/autoupdater.ts	100.00% <0.00%> (+1.56%)	⬆️

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[chinthakagodawita]

Tests against autoupdate-test have passed, LGTM!