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 98.49%. Comparing base (e675aa9) to head (6c16750).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #343   +/-   ##
=========================================
  Coverage     98.49%   98.49%           
  Complexity      332      332           
=========================================
  Files            21       21           
  Lines          1061     1061           
=========================================
  Hits           1045     1045           
  Misses           16       16           

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