Use newer PHPUnit

Author: ondrejmirtes

composer.json

@@ -25,7 +25,7 @@
 		"php-parallel-lint/php-parallel-lint": "^1.2",
 		"phpstan/phpstan-phpunit": "^1.0",
 		"phpstan/phpstan-strict-rules": "^1.0",
-		"phpunit/phpunit": "~9.5.28"
+		"phpunit/phpunit": "^9.5.28"
 	},
 	"config": {
 		"platform": {