feat: drop support for Node.js 14 and 16

[otaviomacedo]

Since May 30th, 2025, these versions are no longer supported.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.00%. Comparing base (49699d8) to head (f795ffe).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #565      +/-   ##
==========================================
- Coverage   79.61%   79.00%   -0.61%     
==========================================
  Files          47       47              
  Lines        7083     7083              
  Branches      798      791       -7     
==========================================
- Hits         5639     5596      -43     
- Misses       1423     1468      +45     
+ Partials       21       19       -2     

Flag	Coverage Δ
suite.unit	79.00% <ø> (-0.61%)	⬇️

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