Add support for the newer versions of Ruby

[TecnoSigma]

Is necessary to adds support for the newer versions of Ruby, according to the list below:

• 3.0.1 [Pendent]
• 2.7.3 [Pendent]
• 2.6.7 [Pendent]

And, to support remotion of oldest (EoL) versions Ruby < 2.6.

Ref: https://www.ruby-lang.org/en/downloads/branches/

[anakinj]

I could take a stab on this one. You think it would be wise to move from TravisCI to GitHub actions?

[VictorSNA]

Hey @anakinj thanks for your interest, I've discussed with the team and we had agree with that change! Thanks for your suggestion!

I'm assigning you! Thanks again!