Update rector/rector requirement from ^1.2 to ^2.0 (#84)

Author: dependabot[bot]

composer.json

@@ -37,7 +37,7 @@
         "maglnet/composer-require-checker": "^4.4",
         "php-mock/php-mock-phpunit": "^2.6",
         "phpunit/phpunit": "^9.5",
-        "rector/rector": "^1.2",
+        "rector/rector": "^2.0",
         "roave/infection-static-analysis-plugin": "^1.16",
         "spatie/phpunit-watcher": "^1.23",
         "vimeo/psalm": "^4.30|^5.21",