Use stable version of coding standard

Author: janbarasek

composer.json

@@ -25,7 +25,7 @@
 		"phpstan/phpstan": "^0.12.18",
 		"tracy/tracy": "^2.7",
 		"phpstan/phpstan-nette": "^0.12.6",
-		"symplify/easy-coding-standard": "^8.1",
+		"symplify/easy-coding-standard": "^7.2",
 		"baraja-core/localization": "^1.0"
 	},
 	"autoload": {