Revert "chore(deps): update kotlin to v2.1.0"

[Ahoo-Wang]

Reverts #515

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.75%. Comparing base (e237074) to head (bddb5aa).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #527   +/-   ##
=========================================
  Coverage     74.75%   74.75%           
  Complexity      361      361           
=========================================
  Files            69       69           
  Lines          1347     1347           
  Branches        142      142           
=========================================
  Hits           1007     1007           
  Misses          203      203           
  Partials        137      137           

Flag	Coverage Δ
unittests	74.75% <ø> (ø)

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