Update rector/rector requirement from 0.11.14 to 0.11.15 (#4803)

Author: dependabot[bot]

composer.json

@@ -23,7 +23,7 @@
         "phpstan/phpstan": "0.12.88",
         "phpunit/phpunit": "^9.1",
         "predis/predis": "^1.1",
-        "rector/rector": "0.11.14",
+        "rector/rector": "0.11.15",
         "symplify/package-builder": "^9.3"
     },
     "suggest": {