Update PHPStan 2.0 (#22)

Author: zonuexe

composer.json

@@ -16,7 +16,7 @@
     "require-dev": {
         "ergebnis/composer-normalize": "^2.0",
         "friendsofphp/php-cs-fixer": "^2.17",
-        "phpstan/phpstan": "~0.12.0",
+        "phpstan/phpstan": "^2.0",
         "phpunit/phpunit": "^9.2"
     },
     "autoload": {

phpstan.neon

@@ -2,7 +2,8 @@ parameters:
     level: 7
     paths: [ src ]
     ignoreErrors:
-        - '/If condition is always false/'
-        - '/If condition is always true/'
-        - '/Unreachable statement/'
-
+        - identifier: deadCode.unreachable
+        - identifier: empty.offset
+        - identifier: if.alwaysFalse
+        - identifier: if.alwaysTrue
+        - identifier: method.unused