ci: add regression tests

[wellwelwel]

Add regression tests from sidorares/node-mysql2#4054 (comment) report (already fixed in #34).

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (84d5e6a) to head (b05a5c5).
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Additional details and impacted files

@@            Coverage Diff            @@
##              main       #36   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines          439       439           
=========================================
  Hits           439       439           

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