Update rector/rector requirement from ^0.17 || ^0.18 to ^0.17 || ^0.1…

…8 || ^0.19

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](https://github.com/rectorphp/rector/commits/0.19.0)

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

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

composer.json

@@ -94,7 +94,7 @@
         "phpstan/phpstan": "^1.10",
         "phpstan/phpstan-deprecation-rules": "^1.1",
         "phpunit/phpunit": "^8.5 || ^9.0 || ^10.0",
-        "rector/rector": "^0.17 || ^0.18",
+        "rector/rector": "^0.17 || ^0.18 || ^0.19",
         "symfony/mailer": "^5.4 || ^6.0",
         "symfony/var-dumper": "^5.4 || ^6.0",
         "textalk/websocket": "^1.5",