Update dependency phpstan/phpstan to ^2.3.1 (12.5)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
phpstan/phpstan	^2.3.0 → ^2.3.1

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Release Notes

phpstan/phpstan-phar-composer-source (phpstan/phpstan)

v2.3.1

Compare Source

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.38%. Comparing base (781eb5b) to head (0c37ef7).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##               12.5    #1353   +/-   ##
=========================================
  Coverage     89.38%   89.38%           
  Complexity     1410     1410           
=========================================
  Files           105      105           
  Lines          4728     4728           
=========================================
  Hits           4226     4226           
  Misses          502      502           

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