Update phpstan

Author: odan

composer.json

@@ -18,7 +18,7 @@
     },
     "require-dev": {
         "overtrue/phplint": "^1.1",
-        "phpstan/phpstan-shim": "^0.9|^0.10|^0.11",
+        "phpstan/phpstan": "*",
         "phpunit/phpunit": "^6|^7",
         "squizlabs/php_codesniffer": "^3.4"
     },