[TASK] Update rector/rector to ^0.15.21 || ^0.16.0

| datasource | package       | from    | to     |
| ---------- | ------------- | ------- | ------ |
| packagist  | rector/rector | 0.15.25 | 0.16.0 |

Author: renovate[bot]

composer.json

@@ -14,7 +14,7 @@
 	"require": {
 		"php": "~8.1.0 || ~8.2.0",
 		"composer-runtime-api": "^2.0",
-		"rector/rector": "^0.15.21"
+		"rector/rector": "^0.15.21 || ^0.16.0"
 	},
 	"require-dev": {
 		"armin/editorconfig-cli": "^1.5",