Update rector/rector requirement from ^0.18.3 to ^0.19.0 (#349)

Updates the requirements on [rector/rector](https://github.com/rectorphp/rector) to permit the latest version.
- [Release notes](https://github.com/rectorphp/rector/releases)
- [Commits](rectorphp/rector@0.18.3...0.19.0)

---
updated-dependencies:
- dependency-name: rector/rector
  dependency-type: direct:development
...

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composer.json

@@ -32,7 +32,7 @@
         "maglnet/composer-require-checker": "^4.2",
         "phpbench/phpbench": "^1.2.0",
         "phpunit/phpunit": "^9.5",
-        "rector/rector": "^0.18.3",
+        "rector/rector": "^0.19.0",
         "roave/infection-static-analysis-plugin": "^1.25",
         "spatie/phpunit-watcher": "^1.23",
         "vimeo/psalm": "^4.30|^5.7",