Bump phpstan from 1.x to 2.1+ and remove unnecessary psalm annotations

Author: Kirill Nesmeyanov

composer.json

@@ -19,8 +19,7 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.53",
         "jetbrains/phpstorm-attributes": "^1.0",
-        "phpstan/phpstan": "^2.0",
-        "phpstan/phpstan-deprecation-rules": "^2.0",
+        "phpstan/phpstan": "^2.1",
         "phpstan/phpstan-strict-rules": "^2.0",
         "phpunit/phpunit": "^10.5|^11.0",
         "rector/rector": "^1.1",

phpstan.neon

@@ -1,6 +1,5 @@
 includes:
   - phar://phpstan.phar/conf/bleedingEdge.neon
-  - vendor/phpstan/phpstan-deprecation-rules/rules.neon
   - vendor/phpstan/phpstan-strict-rules/rules.neon
 parameters:
   level: max