Update rector/rector requirement from ^1.1 to ^1.2

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@1.1.0...1.2.0)

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

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

composer.json

@@ -21,7 +21,7 @@
         "friendsofphp/php-cs-fixer": "^3.59",
         "phpunit/phpunit": "^9.6.19",
         "phpstan/phpstan": "^1.11",
-        "rector/rector": "^1.1"
+        "rector/rector": "^1.2"
     },
     "autoload": {
         "psr-4": {