Dev dependencies update (#74)

Author: pepakriz

composer.json

@@ -17,15 +17,15 @@
 	},
 	"require-dev": {
 		"cdn77/coding-standard": "^0.7.1",
-		"jakub-onderka/php-console-highlighter": "0.3.2",
+		"jakub-onderka/php-console-highlighter": "0.4.0",
 		"jakub-onderka/php-parallel-lint": "1.0.0",
-		"phpunit/phpunit": "^7.1.5",
-		"phpstan/phpstan-phpunit": "^0.11",
+		"php-coveralls/php-coveralls": "^2.1",
 		"phpstan/phpstan-nette": "^0.11",
+		"phpstan/phpstan-phpunit": "^0.11",
 		"phpstan/phpstan-strict-rules": "^0.11",
+		"phpunit/phpunit": "^7.5.6",
 		"slevomat/coding-standard": "^4.8.3",
-		"satooshi/php-coveralls": "^2.0",
-		"squizlabs/php_codesniffer": "~3.3.2"
+		"squizlabs/php_codesniffer": "~3.4.0"
 	},
 	"autoload": {
 		"psr-4": {