fix: upgrade equatable to fix dartdoc warnings

[jeroen-meijer]

No description provided.

[codecov]

Codecov Report

Merging #14 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #14   +/-   ##
=========================================
  Coverage   99.585%   99.585%           
=========================================
  Files            6         6           
  Lines          241       241           
=========================================
  Hits           240       240           
  Misses           1         1           

Impacted Files	Coverage Δ
lib/kana_kit.dart	98.823% <ø> (ø)

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