fix: dev dependencies not installable with Laravel 12 because of testbench incompatibility

Author: tpetry

Diff for: composer.json

@@ -26,7 +26,7 @@
         "mockery/mockery": "^1.6",
         "nunomaduro/collision": "^3.1|^4.0|^5.0|^6.0|^7.0|^8.0",
         "nunomaduro/larastan": "^1.0|^2.0",
-        "orchestra/testbench": "^4.0|^5.0|^6.0|^7.0|^8.0|^9.0",
+        "orchestra/testbench": "^4.0|^5.0|^6.0|^7.0|^8.0|^9.0|^10.0",
         "phpstan/extension-installer": "^1.1",
         "phpstan/phpstan-deprecation-rules": "^1.0",
         "phpstan/phpstan-phpunit": "^1.0"