Update to PHPStan 2

[gapple]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (6686e27) to head (b02d862).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##             develop       #61   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       206       206           
===========================================
  Files             13        13           
  Lines            492       492           
===========================================
  Hits             492       492           

Flag	Coverage Δ
phpunit	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.