Updated dependencies

Author: kukulich

composer.json

@@ -16,10 +16,10 @@
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "1.0.0",
 		"phing/phing": "2.16.1",
-		"phpstan/phpstan": "0.11.6",
-		"phpstan/phpstan-phpunit": "0.11.1",
-		"phpstan/phpstan-strict-rules": "0.11",
-		"phpunit/phpunit": "8.1.4",
+		"phpstan/phpstan": "0.11.8",
+		"phpstan/phpstan-phpunit": "0.11.2",
+		"phpstan/phpstan-strict-rules": "0.11.1",
+		"phpunit/phpunit": "8.2.1",
 		"dealerdirect/phpcodesniffer-composer-installer": "0.5.0"
 	},
 	"autoload": {