chore(encoding): Update error message for base32/base64 for invalid input length

[BlackAsLight]

Jumping from this conversation: #6499 (comment)

This pull request updates the error message when the input has an invalid length to properly decode

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.30%. Comparing base (48fae8f) to head (b125171).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6504   +/-   ##
=======================================
  Coverage   95.30%   95.30%           
=======================================
  Files         575      575           
  Lines       43279    43281    +2     
  Branches     6467     6467           
=======================================
+ Hits        41247    41249    +2     
  Misses       1993     1993           
  Partials       39       39           

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