chore: 🔧 bumped node version to 14 LTS

[nosycode]

Change node version to Active LTS for nvm (lts/fermium) and package(v14.15.0 or greater). https://github.com/nodejs/node/blob/master/doc/changelogs/CHANGELOG_V14.md

• [x] You have followed our contributing guidelines
• [x] Double-check your branch is based on dev and targets dev
• [ ] Pull request has tests (we are going for 100% coverage!)
• [ ] Code is well-commented, linted and follows project conventions
• [ ] Documentation is updated (if necessary)
• [ ] Internal code generators and templates are updated (if necessary)
• [x] Description explains the issue/use-case resolved and auto-closes related issues

[coveralls]

Pull Request Test Coverage Report for Build 1108036179

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.678%

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Totals
Change from base Build 1049036495:	0.0%
Covered Lines:	249
Relevant Lines:	249

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💛 - Coveralls