Update pestphp/pest requirement from ^1.20 to ^2.8

Updates the requirements on [pestphp/pest](https://github.com/pestphp/pest) to permit the latest version.
- [Release notes](https://github.com/pestphp/pest/releases)
- [Changelog](https://github.com/pestphp/pest/blob/2.x/CHANGELOG.md)
- [Commits](pestphp/pest@v1.20.0...v2.8.0)

---
updated-dependencies:
- dependency-name: pestphp/pest
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -21,7 +21,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.0",
-        "pestphp/pest": "^1.20",
+        "pestphp/pest": "^2.8",
         "spatie/ray": "^1.28"
     },
     "autoload": {