Remove yiisoft/json dependency

[Tigrov]

Related PR

• Remove yiisoft/json from require-dev section of composer.json db#938

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.70%. Comparing base (8dc666f) to head (b8f5dfb).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #382   +/-   ##
=========================================
  Coverage     98.70%   98.70%           
  Complexity      173      173           
=========================================
  Files            15       15           
  Lines           541      541           
=========================================
  Hits            534      534           
  Misses            7        7           

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