build: minimum supported Nodejs version is 14.15.0

[snitin315]

This PR contains a:

• [ ] bugfix
• [ ] new feature
• [ ] code refactor
• [ ] test update
• [ ] typo fix
• [x] metadata update

Motivation / Use-Case

Drop nodejs v12

Breaking Changes

minimum supported Nodejs version is 14.15.0

Additional Info

No

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.39%. Comparing base (accbb90) to head (fa55718).

Additional details and impacted files

@@           Coverage Diff           @@
##             next     #163   +/-   ##
=======================================
  Coverage   97.39%   97.39%           
=======================================
  Files           6        6           
  Lines         730      730           
  Branches      317      317           
=======================================
  Hits          711      711           
  Misses         17       17           
  Partials        2        2           

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[alexander-akait]

@snitin315 Let's postpone it after drop webpack v4 and nodes everywhere, anyway I am fine with this PR :+1:

[alexander-akait]

Let's close because the last version has compatibility with Node.js@10 and webpack, I think we need update engines only when we will have webpack@6 release