Bumping node16 version because seems node14 fails

[agomezmoron]

After bumping into node14 seems an error appeared:

Parameter ''using: node14' is not supported, use 'docker', 'node12' or 'node16' instead.')

Seemed to be supported but seems it's not.

[codecov]

Codecov Report

Merging #45 (4ba3207) into v1 (aa09429) will decrease coverage by 0.22%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##               v1      #45      +/-   ##
==========================================
- Coverage   93.33%   93.10%   -0.23%     
==========================================
  Files           1        1              
  Lines          60       58       -2     
  Branches       18       16       -2     
==========================================
- Hits           56       54       -2     
  Misses          4        4              

Impacted Files	Coverage Δ
src/action.js	93.10% <100.00%> (-0.23%)	⬇️

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[pozil]

Damn, this is a pain but thanks or the fix. Re-releasing now.