Upgrade webmozart/assert version to ^2.1 (#6)

* Update webmozart/assert version to ^2.1

* fix phpunit

Author: samsonasik

composer.json

@@ -10,7 +10,7 @@
         "php": "^8.2",
         "symfony/console": "^6.4|^7.0",
         "nategood/httpful": "^1.0",
-        "webmozart/assert": "^1.11",
+        "webmozart/assert": "^2.1",
         "symfony/process": "^6.4|^7.0"
     },
     "require-dev": {

tests/ChangelogContentsFactory/Fixture/generated_changelog.md

@@ -1,6 +1,7 @@
 ## New Features :partying_face:
 
 * Add new rule
+* Enable PHPStan on tests as well + add "unused public" ([#3238](https://github.com/rectorphp/rector-src/pull/3238))
 
 <br>