Update dependency rector/rector to ^0.18.4 (#188)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [rector/rector](https://getrector.org)
([source](https://togithub.com/rectorphp/rector)) | `^0.18.3` ->
`^0.18.4` |
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|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/packagist/rector%2frector/0.18.4?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/packagist/rector%2frector/0.18.3/0.18.4?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|

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### Release Notes

<details>
<summary>rectorphp/rector (rector/rector)</summary>

###
[`v0.18.4`](https://togithub.com/rectorphp/rector/compare/0.18.3...0.18.4)

[Compare
Source](https://togithub.com/rectorphp/rector/compare/0.18.3...0.18.4)

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composer.json

@@ -51,7 +51,7 @@
     "phpstan/phpstan-strict-rules": "^1.5.1",
     "phpunit/phpunit": "^9.6.13",
     "psr/container": "^2.0",
-    "rector/rector": "^0.18.3"
+    "rector/rector": "^0.18.4"
   },
   "config": {
     "sort-packages": true,