MC-25203: Introduce PHPStan code analysis tool to the static build

- update composer

Author: viktym

composer.json

@@ -92,7 +92,7 @@
         "pdepend/pdepend": "2.5.2",
         "phpcompatibility/php-compatibility": "^9.3",
         "phpmd/phpmd": "@stable",
-        "phpstan/phpstan": "^0.12.2",
+        "phpstan/phpstan": "^0.12.3",
         "phpunit/phpunit": "~6.5.0",
         "sebastian/phpcpd": "~3.0.0",
         "squizlabs/php_codesniffer": "~3.4.0"