Update rector/rector requirement from ^0.18.12 to ^1.0.3 (#206)

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@0.18.12...1.0.3)

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

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composer.json

@@ -24,7 +24,7 @@
         "phpstan/phpstan": "^1.10",
         "phpstan/phpstan-strict-rules": "^1.5",
         "phpunit/phpunit": "^9.6",
-        "rector/rector": "^0.18.12",
+        "rector/rector": "^1.0.3",
         "squizlabs/php_codesniffer": "^3.8"
     },
     "autoload": {