add types to whevents

[felipao-mx]

agrega tipos a WebhookEvent
relacionado a
https://github.com/cuenca-mx/hermes/issues/201

[codecov]

Codecov Report

Merging #351 (397d39e) into main (23f5c00) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #351   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           14        14           
  Lines         1257      1261    +4     
=========================================
+ Hits          1257      1261    +4     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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Files	Coverage Δ
cuenca_validations/types/enums.py	100.00% <100.00%> (ø)
cuenca_validations/version.py	100.00% <100.00%> (ø)

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