Update pestphp/pest requirement from ^2.20 to ^3.4

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/3.x/RELEASE.md)
- [Commits](pestphp/pest@v2.20.0...v3.4.2)

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

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

composer.json

@@ -23,7 +23,7 @@
         "illuminate/broadcasting" : "^10.0|^11.0",
         "openai-php/client": "^0.10.1",
         "illuminate/cache" : "^10.0|^11.0",
-        "pestphp/pest" : "^2.20",
+        "pestphp/pest" : "^3.4",
         "phpstan/phpstan" : "^1.11",
         "psr/simple-cache-implementation" : "^3.0",
         "psr/simple-cache" : "^3.0",