Set infection version explicitly

Author: viktorprogger

composer.json

@@ -51,6 +51,7 @@
         "phpunit/phpunit": "^10.5",
         "rector/rector": "^2.0",
         "roave/infection-static-analysis-plugin": "^1.34",
+        "infection/infection": "^0.29.9",
         "spatie/phpunit-watcher": "^1.23",
         "vimeo/psalm": "^5.20||^6.0",
         "yiisoft/test-support": "^3.0",