fix tomasvotruba/unused-public version constraint (#619)

Author: staabm

composer.json

@@ -21,7 +21,7 @@
 		"phpstan/phpstan-strict-rules": "^1.1",
 		"phpunit/phpunit": "^8.5|^9.5",
 		"symplify/easy-coding-standard": "^11.4",
-		"tomasvotruba/unused-public": "^0.2.0",
+		"tomasvotruba/unused-public": "^0.2",
 		"vlucas/phpdotenv": "^5.4"
 	},
 	"conflict": {