Update rector/rector requirement from ^0.18.5 to ^0.19.0 (#286)

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@0.18.5...0.19.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

composer.json

@@ -33,7 +33,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",
-        "rector/rector": "^0.18.5"
+        "rector/rector": "^0.19.0"
     },
     "autoload": {
         "psr-4": {