Run Yii DB tests

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues	comma-separated list of tickets # fixed by the PR, if any

[what-the-diff]

PR Summary

• Introduction of Db Test Suite
  We've incorporated a new series of test operations, grouped under the name "Db". These tests are located in the directory "./vendor/yiisoft/db/tests". This addition to our testing suite will provide a more comprehensive assessment of our database functionalities, proving invaluable for maintaining high quality and performance.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e439a55) 98.40% compared to head (6a54f76) 98.40%.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #246   +/-   ##
=========================================
  Coverage     98.40%   98.40%           
  Complexity      175      175           
=========================================
  Files            16       16           
  Lines           564      564           
=========================================
  Hits            555      555           
  Misses            9        9           

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