build(rector): require the versions the config depends on

rector.php skips three rules by class name, and Rector fails hard when
a skipped rule does not exist. On a prefer-lowest build the previous
constraints resolved rector 2.0.0 and rector-laravel 2.0.0, where none
of the three had been written yet:

    [ERROR] These rules from "$rectorConfig->skip()" does not exist
     * RectorLaravel\Rector\FuncCall\AppToResolveRector
     * RectorLaravel\Rector\ClassMethod\MakeModelAttributesAndScopesProtectedRector
     * Rector\Php84\Rector\MethodCall\NewMethodCallWithoutParenthesesRector

Both constraints move to ^2.6, the range that carries them. Verified
on the two ends of the matrix: Laravel 12 with prefer-lowest, which
resolves rector 2.6.4 and rector-laravel 2.6.1, and Laravel 13 with
prefer-stable. Both dependencies are dev only, so nothing changes for
an application installing the package.

Author: danielebarbaro

composer.json

@@ -29,7 +29,7 @@
         "spatie/laravel-query-builder": "^7.3.1"
     },
     "require-dev": {
-        "driftingly/rector-laravel": "^2.0",
+        "driftingly/rector-laravel": "^2.6",
         "larastan/larastan": "^3.9",
         "laravel/pao": "^1.0",
         "laravel/pint": "^1.29",
@@ -42,7 +42,7 @@
         "phpstan/extension-installer": "^1.4",
         "phpstan/phpstan-deprecation-rules": "^2.0",
         "phpstan/phpstan-phpunit": "^2.0",
-        "rector/rector": "^2.0"
+        "rector/rector": "^2.6"
     },
     "autoload": {
         "psr-4": {