Replace PHPStan with Psalm

composer.json

@@ -24,7 +24,7 @@
         "friends-of-behat/mink-extension": "^2.2",
         "friends-of-behat/page-object-extension": "^0.3.1",
         "friends-of-behat/service-container-extension": "^1.0",
-        "phpstan/phpstan-shim": "^0.11",
+        "vimeo/psalm": "3.10.1",
         "sylius-labs/coding-standard": "^3.0",
         "symfony/browser-kit": "^4.4|^5.0",
         "symfony/framework-bundle": "^4.4|^5.0",
@@ -55,7 +55,7 @@
         ],
         "analyse": [
             "vendor/bin/ecs check --ansi --no-progress-bar src tests",
-            "vendor/bin/phpstan analyse --ansi --no-progress -c phpstan.neon -l max src"
+            "vendor/bin/psalm src --no-progress"
         ]
     },
     "extra": {