Update rector/rector requirement from ^0.14.8 to ^1.2.4

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@0.14.8...1.2.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -35,7 +35,7 @@
         "squizlabs/php_codesniffer": "^3.5",
         "vimeo/psalm": "^4.17",
         "ray/rector-ray": "^1.0",
-        "rector/rector": "^0.14.8",
+        "rector/rector": "^1.2.4",
         "ray/compiler": "^1.9.1",
         "bear/devtools": "^1.0"
     },