Use PHPStan 2.0 (#18)

Author: janedbal

composer.json

@@ -15,14 +15,14 @@
         "editorconfig-checker/editorconfig-checker": "^10.6.0",
         "ergebnis/composer-normalize": "^2.42.0",
         "nette/utils": "^4",
-        "phpstan/phpstan": "^1.10.67",
-        "phpstan/phpstan-phpunit": "^1.3.16",
-        "phpstan/phpstan-strict-rules": "^1.5.5",
+        "phpstan/phpstan": "^2.0",
+        "phpstan/phpstan-phpunit": "^2.0",
+        "phpstan/phpstan-strict-rules": "^2.0",
         "phpunit/phpunit": "^10.5",
         "psr/log": "^3",
-        "shipmonk/composer-dependency-analyser": "^1.5",
+        "shipmonk/composer-dependency-analyser": "^1.7",
         "shipmonk/name-collision-detector": "^2.1.1",
-        "shipmonk/phpstan-rules": "^3.2",
+        "shipmonk/phpstan-rules": "^4.0",
         "slevomat/coding-standard": "^8.15.0",
         "symfony/cache": "^6 || ^7"
     },