Update dependency roave/backward-compatibility-check to ^8.9.0

Author: renovate[bot]

composer.json

@@ -28,7 +28,7 @@
     "phpunit/phpunit": "^10.5.32",
     "psalm/plugin-mockery": "^1.1",
     "psalm/plugin-phpunit": "^0.19.0",
-    "roave/backward-compatibility-check": "^8.6.0",
+    "roave/backward-compatibility-check": "^8.9.0",
     "roave/infection-static-analysis-plugin": "^1.33.0",
     "squizlabs/php_codesniffer": "^3.10.1",
     "thecodingmachine/safe": "^2.5.0",