chore(deps): Update dependency phpstan/phpstan-phpunit to v2.0.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
phpstan/phpstan-phpunit	2.0.19 → 2.0.20

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Release Notes

phpstan/phpstan-phpunit (phpstan/phpstan-phpunit)

v2.0.20

Compare Source

• ef0c8f5 - feat: Discourage assert(Not)Empty if "empty" usage is disallowed (#​325)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (260912f) to head (d6f437f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##                main      #331   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        47        47           
===========================================
  Files              8         8           
  Lines            124       124           
===========================================
  Hits             124       124           

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