Varbase 9.2.1 Patch release for existing Varbase 9.2.x (Drupal ~11.4) sites. Moves the Automated Functional Testing suites onto Varbase E2E (@vardot/varbase-e2e ^2, Playwright + Cucumber-js) and clears the PHPStan findings raised by the updated analyzers. Plan: https://www.drupal.org/i/3616857